
Prince was treated for an overdose just six days before he was found dead in his Minnesota estate on Thursday, a report has claimed.

News of the alleged overdose came as photos emerged of Prince walking out of a Walgreens pharmacy just 15 hours before he was pronounced dead.

Prince's private plane made an emergency landing in Moline, Illinois, on Friday after he performed in Atlanta so he could be rushed to hospital.

Though his representatives said he was battling the flu, multiple sources told TMZ that doctors gave him a 'save shot', which is usually given in dire circumstances to drug overdose victims.

The sources said that doctors advised Prince to stay at the hospital for 24 hours, but when he wasn't given a private room, he and his representatives decided to leave. When he left the hospital, Prince 'was not doing well', the sources added.

He was released three hours later and made an appearance at a party in Minnesota the next day, telling fans to 'wait a few days before you waste any prayers'.

The 57-year-old music icon was then seen at about 7pm on Wednesday at a Walgreens pharmacy looking 'frail and nervous' with a group of employees or friends. It was his fourth visit to the pharmacy this week.

It is unknown why he went to the store himself or if he picked up a prescription, though per Walgreens protocol, anyone with Prince's phone number and address could have retrieved medication for him.

Prince was then found unresponsive in the elevator at his suburban Paisley Park estate in Minnesota at 9.43am EST on Thursday and was pronounced dead less than 30 minutes later.

His cause of death is not known, but in a call to paramedics on the way to Prince's home, a 911 dispatcher said: 'Male down, not breathing.'

In the midst of the phone call, the dispatcher asks, 'Are you with the person who's…' and the unidentified male responds, 'Yes, it's Prince'.

Prince was seen walking out of a Walgreens pharmacy near his Minnesota estate just 15 hours before he was pronounced dead on Thursday

Prince (pictured in 1985) has died aged 57 at his estate in Minnesota, just days after he was rushed to hospital from his private plane with severe flu

A rainbow appears over Paisley Park near a memorial for Prince, where fans brought flowers and cards for the late pop icon

Fans of Prince were overcome with emotion as they laid flowers outside his home in Minnesota today, where dozens of people gathered

Sheila Clayton (left) of St Paul, Minnesota, hugs an unidentified friend outside of Paisley Park on Thursday after hearing news of Prince's death

A fan grieves outside First Avenue, a dance venue in Minneapolis, Minnesota, on Thursday where Prince is one of many music legends featured in a silver star outside the nightclub

Paramedics were called to his Paisley Park studio (pictured) at 9.43 this morning and the music icon's death has now been confirmed

Prince made a surprise appearance at a dance party in Minnesota on Saturday, in what is believed to have been his final public appearance

Riding on: Prince was seen riding a bicycle outside his estate in this picture posted on Instagram on Sunday

The superstar musician combined rock, R&B, soul and hip-hop to create a unique sound that led to him selling more than 100million records during his 40-year career

COUNTDOWN TO PRINCE'S DEATH Thursday, April 14: Prince performs in Atlanta and appears to be fine. Friday, April 15: Prince's private plane makes an emergency landing at Moline, Illinois, and he is taken to hospital for 'flu symptoms'. He is released after three hours of treatment. Saturday, April 16: Prince goes to a party in Minnesota to give 'proof' he is still alive. 'Wait a few days before you waste any prayers,' he tells fans. Sunday, April 17: Prince is seen riding a bicycle outside his apartment. Wednesday, April 20: Prince is seen looking 'frail and nervous' at a Walgreen's store near his estate at around 7pm. It is his fourth visit to the pharmacy this week. Thursday, April 21: Prince is found unresponsive in an elevator inside his compound at 9.43am. He is pronounced dead at 10.07am. Advertisement

The caller struggles to find the address of the home and has to ask several people for numbers and streets.

He struggles to decipher Minneapolis from the suburban Chanhassen, and tells the dispatcher they're in Minneapolis before finally telling the dispatcher that they are at Paisley Park.

The dispatcher finally gets the address sorted out - after realizing that it is Prince that is unresponsive - and sends an ambulance toward the estate in Chanhassen.

An autopsy will be performed on Friday to determine the exact cause of the star's death.

TMZ reported that the seven-time Grammy award winning singer's plane diverted to Quad City International Airport in Moline, Illinois, last Friday to make the emergency landing.

It is unclear which hospital Prince was taken to in Moline following the emergency landing. The closest hospital to the airport is Trinity Regional Health System. The city is also home to the Genesis Health Plex.

Prince had previously revealed that he was epileptic and had suffered seizures as a child. He was bullied at school over his condition which he said he dealt with by developing his iconic larger-than-life personality.

The singer, a devout Jehovah's Witness, later told his mother he had been cured by an angel.

While Prince never made clear if he was still struggling to live with epilepsy, his song The Sacrifice of Victor tells the story of a boy who was 'epileptic 'til the age of seven'.

Meanwhile, Aretha Franklin made the bizarre suggestion that Prince may have contracted the Zika virus.

FULL TRANSCRIPT OF HARROWING 911 CALL MADE FROM PRINCE'S ESTATE BEFORE HE WAS PRONOUNCED DEAD Dispatcher: 911, where is your emergency? Unidentified male: Hi there, um, what's the address here? Yeah we need an ambulance right now. D: Okay. UM: We have someone who is unconscious. D: Okay, what's the address? UM: Um, we're at Prince's house. D: Okay, does anybody know the address? Is there any mail around that you could look at? UM: Yeah, yeah, okay, hold on. D: Okay, your cell phone's not going to tell me where you're at, so I need you to find me an address. UM: Yeah, we have um, yeah, we have um, so yeah, um, the person is dead here. D: Okay, get me the address please. UM: Okay, okay, I'm working on it. D: Concentrate on that. UM: And the people are just distraught. D: I understand that they are distraught, but… UM: I'm working on it, I'm working on it. D: Okay, do we know how the person died? UM: I don't know, I don't know. D: Okay. UM: Um, so we're, we're in Minneapolis, Minnesota and we are at the home of Prince. D: You're in Minneapolis? UM: Yeah, Minneapolis, Minnesota. D: You're sure you are in Minneapolis? UM: That's correct. D: Okay, have you found an address yet? UM: Yeah, um, I'm so sorry I need, I need the address here? Unidentified female: 7801 UM: 7801 D: 7801 what? UM: Paisley Park, we are at Paisley Park. D: You're at Paisley Park, okay, that's in Chanhassen. Are you with the person who's… UM: Yes, it's Prince. D: Okay. UM: The person. D: Okay, stay on the line with me. UM: Okay. (Phone ringing) Ambulance dispatcher: Ambulance, Shirley. D: Carver with the transfer for Paisley Park Studios, 78. AD: Paisley Park Studios, okay. D: 7801 Audubon Road. AD: Okay. D: We have a person down, not breathing. AD: Down, not breathing. D: Yup. UM: He's, he's… D: We're going to get everybody, go ahead with the transmittal. Advertisement

The Purple Rain hitmaker had performed at The Fox Theatre in Atlanta on last Thursday night - the second of two back to back sold out shows - and had seemed fine during the concert.

Prince made what is believed to have been his final public appearance on Saturday at a dance party in Minnesota.

He was keen for people to have 'living proof' that he was still alive, and he arrived at the bash to show off his new guitar and piano.

He didn't sing, but he did tell the crowd: 'Wait a few days before you waste any prayers.'

A picture posted by a fan on Instagram appeared to show Prince riding a bicycle outside his estate on Sunday.

Prince's $10million Paisley Park compound sits just more than half an hour outside Minneapolis, and the musician would host parties and record music at the estate, according to CBS Minnesota.

Construction began on the estate, which was designed and owned by Prince, in 1985 and it officially opened on September 11, 1987.

It featured a 12,000 square-foot soundstage, guitar room, game room, and 'The Vault', where he stored unreleased material.

He allowed fans to buy passes to tour the estate in 2000, but no one was allowed in The Vault.

Prince was known for his sexually charged lyrics and was romantically linked to a number of male and female stars, including Madonna, Sinead O'Connor, Kim Basinger, Kylie Minogue, Carmen Electra and Boy George, among a number of other people.

Prince (pictured in 2004 with his second wife Manuela Testolini) married twice and was romantically linked to a number stars

Prince married backup dance Mayte Garcia (pictured together in 1999) on Valentine's Day in 1996. He dedicated the song the Most Beautiful Girl in the World to her two years earlier

Grieving: Garcia looked exhausted and emotional today as she made a phone call at her home in Los Angeles, just hours after learning of her ex-husband's death

Prince also slept with close friend and collaborating artist Sheila E (pictured singing together) while he was in a relationship with Susannah Melvoin, the twin sister of Wendy Melvoin who was in his band, The Revolution

Prince then dated Bria Valente (pictured together at a Los Angeles Lakers basketball game in 2008) until around 2010, after which time they were still recording music together.

The Purple Rain hitmaker had performed at The Fox Theatre in Atlanta on last Thursday night - the second of two back to back sold out shows - and had seemed fine during the concert

A 12-inch single, Scandalous Sex Suite, included vocals from Kim Basinger and moans heard on the track were rumored to be recordings of the pair having sex.

Last year Boy George claimed he had slept with Prince.

During filming of The Voice in the UK, he made light of Paloma Faith saying she had performed live with Prince.

'Forget that, darling, I've slept with Prince,' he replied.

Prince also slept with close friend and collaborating artist Sheila E while he was in a relationship with Susannah Melvoin, the twin sister of Wendy Melvoin - who was in his band, The Revolution.

Prince married backup dance Mayte Garcia on Valentine's Day in 1996. He dedicated the song The Most Beautiful Girl in the World to her two years earlier.

They had a son together, called Boy Gregory, in October 1996, but he was born with Pfeiffer Syndrome and died a week later.

The baby was tragically born with Pfeiffer syndrome, a rare disorder that does not allow the head to grow properly due to the premature fusion of certain bones of the skull, and died just a week after his birth.

Garcia, who split with Prince in 2000, looked exhausted and emotional today as she made a phone call at her home in Los Angeles, just hours after learning of her ex-husband's death.

Garcia spoke to People about her ex-husband's tragic death, saying; 'I can't even think of the words of what I'm feeling. This man was my everything, we had a family. I am beyond deeply saddened and devastated.'

She then added; 'I loved him then, I love him now and will love him eternally. He's with our son now.'

In 2001, Prince went on to marry Manuela Testolini, but they divorced in 2006.

He then dated Bria Valente until around 2008, after which time they split but were still recording music together.

Fans and mourners place flowers on a fence outside of Paisley Park, the home and studio of Prince, in Chanhassen, Minnesota

Prince fans embrace by a makeshift memorial outside Paisley Park, the home of singer Prince

Unidentified employees pause for a moment as they monitor fans outside of Paisley Park on Thursday

Prince's sister, Tyka Nelson holds a rose as she thanks supporters for making a memorial in her brother's honor

Terrance May, a musician who goes by the name May Millions, appears at a makeshift memorial for singer Prince outside the dance venue First Avenue in Minneapolis

Prince family members Loretta Thomas (left) and Deshone cry during a candlelight vigil to commemorate Prince in Los Angeles on Thursday

Julya Baer, 30, (right) and other fans sing Purple Rain at a vigil to celebrate the life and music of deceased musician Prince

People dance outside Warner Theatre in Washington, DC, on Thursday to commemorate Prince's life

Mourners gather in front of director Spike Lee's production company headquarters for 'PRINCE We Love You Shockadelica Joint- A Celebration of His Life' on Thursday

Director Spike Lee dances at the street party, which he held in the Brooklyn borough of New York on Thursday

People gather at a makeshift memorial outside of the Apollo Theater dedicated to the musician Prince on Thursday in the Manhattan borough of New York

People paid their respects at a makeshift memorial dedicated to musician Prince at Amoeba Records in Hollywood

The superstar musician combined rock, R&B, soul, disco and hip-hop to create a unique sound that led to him selling more than 100million records during his 40-year career.

Prince was born in Minneapolis, Minnesota, in 1958 and started making music at the age of seven.

He first found fame in the late 1970s and over the next three decades became known as one of the most inventive and eccentric forces in American pop music.

He became even more famous with the release of the film Purple Rain in 1984, a seemingly autobiographical movie set in the club scene in Minneapolis.

The film was a huge success and the soundtrack album spent 24 weeks at the top of the charts and sold more than 13million copies.

He is also the only solo artist to have the number 1 movie, album and single in the United States at the same time. The Beatles are the only the group.

The legendary singer and songwriter is best known for hit songs such as Raspberry Beret and Little Red Corvette.

He was fiercely protective of his independence, battling his record company over control of his material and even his name.

In 1993, Prince legally changed his name to an unpronounceable symbol - also known as the Love Symbol. During that phase, he was referred to as The Artist Formerly Known as Prince. After changing his name back to Prince, he was sometimes called The Artist Formerly Known as The Artist Formerly Known as Prince.

Prince once wrote 'slave' on his face in protest at not owning his work and famously battled and then departed his label, Warner Bros, before returning a few years ago.

Police officers gather outside of Paisley Park in Chanhassen, Minnesota, on Thursday following Prince's death

Friends and employees gather outside of Prince's estate and recording studio, Paisley Park, on Thursday

An aerial shot of Prince's $10million mansion Paisley Park, where many of his friends and family gathered as news of his death emerged

Prince's Jet, which is the same model as the one pictured above, made an emergency landing on Friday in Illinois on the way to Minnesota from Atlanta

Prince, an intensely private person, sold more than 100 million records during his career, won seven Grammy awards and was inducted into the Rock and Roll Hall of Fame in 2004

Prince was born in Minneapolis, Minnesota, in 1958 and started making music at the age of seven, launching his career in proper 10 years later

Prince, an intensely private person, sold more than 100 million records during his career, won seven Grammy awards and was inducted into the Rock and Roll Hall of Fame in 2004.

In 2007, he played the Super Bowl in one of the most celebrated half-time show performances in history.

Prince's most recent album, HITnRUN: Phase Two was released in December 2015 and he was in the process of writing an untitled autobiography, which was due to be published in 2017.

He is believed to have written around 50 pages of his memoirs and had recorded a number of songs that had not been released. It is not clear what will happen to his unpublished work.

'What's happening now is the position that I've always wanted to be in,' he said in 2014. 'I was just trying to get here.'

Fans gathered across the country on Thursday to mourn the loss of the legendary musician and celebrate his life and music.

Mourners were seen outside the 57-year-old music icon's Minnesota estate, Paisley Park, in Chanhassen, Minnesota, dropping off flowers and consoling one another. A rainbow emerged as hundreds stood outside the home.

Prince's sister, Tyka Nelson, thanked fans and dropped a rose off in her brother's honor.

In Minneapolis, fans gathered outside First Ave, a dance venue, where a silver star features Prince's name. The Minnesota Twins lit up their stadium with purple screens to honor the legendary musician.

In Brooklyn, filmmaker Spike Lee decided to host an all-Prince street party to celebrate the star's life and music. He urged attendees of the open event to wear purple in his honor.

New York City's Apollo Theater and Hard Rock Cafe also paid tribute to the music icon.

People danced during a candlelight vigil in remembrance to Prince outside the Warner Theatre in Washington, DC.

In Los Angeles, people gathered for a candlelight vigil in Leimert Park.

Tributes started pouring in almost immediately, with dozens of stars expressing their grief following the death of the music icon.

'What a loss': Madonna shared a throwback photo of herself with Prince, both wearing yellow, and said she is 'devastated' at his death

'I LOVED him': Chaka Khan, who had a hit with Prince's song I Feel For You in 1984, expressed her huge affection for the diminutive star

Tributes started pouring in almost immediately, with dozens of stars expressing their grief following the death of the music icon

Mariah Carey, who joined Prince on stage at the Apollo Theatre to pay tribute to Patti LaBelle in June 2009, said she would 'never get over' his death

Rolling Stones guitarist Ronnie Wood said Prince was 'a good friend who was so talented.' He shared a photo of the two of them rocking on stage together and added: 'Sleep well Prince'

Legendary music producer Quincy Jones joined in the chorus of 'gone too soon' that many were feeling

President Obama said: 'Today, the world lost a creative icon. Michelle and I join millions of fans from around the world in mourning the sudden death of Prince.

'Few artists have influenced the sound and trajectory of popular music more distinctly, or touched quite so many people with their talent.

'As one of the most gifted and prolific musicians of our time, Prince did it all. Funk. R&B. Rock and roll. He was a virtuoso instrumentalist, a brilliant bandleader, and an electrifying performer.

''A strong spirit transcends rules,' Prince once said - and nobody's spirit was stronger, bolder, or more creative. Our thoughts and prayers are with his family, his band, and all who loved him.'

Boy George tweeted: 'Today is the worst day ever. Prince R.I.P I am crying!'

Joan Collins said: 'Shocked that @prince has died at only 57. Such a talent to have died so young.'

'Omg..... RIP Prince,' Demi Lovato tweeted.

'And just like that....the world lost a lot of magic,' tweeted Katy Perry.

Director Spike Lee said: 'I Miss My Brother. Prince Was A Funny Cat. Great Sense Of Humor.'

Retired basketball star Shaquille O'Neal wrote: 'R.I.P PRINCE, another icon gone too soon.'

Oscar-winning actor Russell Crowe called Prince a 'genius' and 'poet', adding he was 'the greatest live act I ever saw'.

Lord Of the Rings star Elijah Wood thanked Prince 'for everything;. Can't even process this. There will never be another,' he added.