
It is the apartment where the killer responsible for the massacre of 50 people inside gay Orlando nightclub Pulse had been living and plotting out his horrific attack.

Omar Mateen had been living in Apartment 107 at the Woodland Condominium in Fort Pierce since he was divorced from wife Sitora Yusufiy in 2011. He was living there with the woman believed to be his current wife and mother of their three-year-old son, Noor Zahi Salman.

Daily Mail has obtained photographs inside the killer's apartment, where investigators did a sweep on Sunday.

The walls of the apartment are adorned with photos of Mateen's three-year-old son. Loads of toys including a Spiderman bicycle, toy trucks and Mickey Mouse posters can be seen throughout the two-bedroom home.

What looks like a ceremonial sword sits proudly by the TV set in the living room and workout equipment sits in a corner. Mateen was known to be obsessed with his physique and had taken steroids.

The master bedroom has red sheets on the bed and a bureau is adorned with balloons, photos and bottles of a woman's perfume.

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Omar Mateen had been living in Apartment 107 at the Woodland Condominium in Fort Pierce since he was married to his first wife

The shooter's living room looks normal and untouched, but investigators went through it on Sunday

The master bedroom has red sheets on the bed and the bureau is adorned with balloons, photos and bottles of perfume

Star Wars bedding and posters adorn the walls of Mateen's son's bedroom along with baseball hats and a Ninja Turtle backpack

The kitchen of Mateen's apartment has dishes in the sink and a pot on the stove

Pictures of Mateen's son adorn the walls and the refrigerator of the apartment in Fort Pierce. Boxes of cereals line the top of the fridge

What looks like a ceremonial sword sits proudly by the TV set in the living room of Mateen's apartment

Mateen weights sit in a corner of the home. He was obsessed with his physique and even took steroids

June 7th at 10:30 pm is bizarrely marked as 'D-Day' on a Mickey and Minnie Mouse calendar. The real D-Day is June 6th. The horrific shootings took place in the wee hours of June 12 - was Mateen planning something for the 7th? Or was he just marking holy Muslim holiday of Ramadan

A picture of Mateen at a video games center show him and his son weilding electronic weapons

All about family? Signs of Mateen's little boy, believed to be three year old are everywhere

'Little boys are just superheroes in disguise,' says one sign on the wall

Mateen had worked for G4S since 2007, the world's largest security company formerly called Wackenhut, which provides guards for US nuclear facilities

Books like Muhammed: Who Is He and An Explanation of the Last Tenth with Crucial Matters in the Life of a Muslin are reading materials found in Mateen's home

The bathroom in Mateen's home has a Star Wars theme too with the towel, curtain and bathmat

A picture of a mosque adorns one wall. But most of the walls in the apartment have family pictures

Being Palestinian Makes Me Smile by Amer Zahr sits next to a copy of the Koran

A Spiderman bike is among the many toys in the apartment. Clearly Mateen's little boy was a fan of trucks and Legos

There is a Mickey and Minnie Mouse calendar marked 'D-Day, 10 pm' on June 7th. The real D-Day is June 6th leaving open the question was Mateen planning something sooner than the June 12 morning of horror. Or was it just marked for Ramadan, the Muslim holy holiday.

Apartments in the building rent for between $600 and $1,000 at the property. Daily Mail Online learned exclusively that Mateen was earning $1,600 a month from his job at G4S Secure Solutions in Jupiter.

Law enforcement officers surrounded the complex on Sunday, and even brought in bomb detonation equipment as they searched Mateen's apartment.

Mateen earned an associate's degree in criminal justice from Indian River State College in Fort Pierce, and expressed interest in joining the police force.

Instead, he worked as a security officer, a fact that comforted other members of the Islamic Center of Fort Pierce where he worshipped, Syed Shafeeq Rahman, the head of he mosque, said.

Sitora Yusufiy, Omar Mateen's first wife, described how he 'seemed like a normal human being' at first.

Following a brief romance after the two met online, the pair married in 2009 and moved into the two-bedroom home in Fort Pierce.

‘After a few months he started to beat me,’ she said. ‘He was mentally unstable… he was obviously disturbed. I know he had a history of [taking] steroids.

'He was not a stable person. He would just come home and start beating me up because the laundry wasn’t finished or something like that.'

Yusufiy said that Mateen owned a gun during their marriage, was ‘short tempered’ and would express ‘hate towards things’. She would not reveal if he had any homophobic views.

Omar Mateen was living in Apartment 107 at the Woodland Condominium in Fort Pierce since 2011. Police swarmed the area on Sunday

Law enforcement officers work on the investigation at the Woodlands Condominium Complex, in Fort Pierce, Fla.

A St. Lucie County command center was set up near Mateen's apartment

Bomb exploding equipment was brought in by the sheriff's office on Sunday

Her parents eventually intervened and the two separated, although their divorce wasn't finalized until 2011.

After spending most of the day searching Omar Mateen’s Port St. Lucie home, cops and the FBI moved on to the custom-built four-bedroom home a couple of blocks of north on Bayshore Boulevard where his parents live.

Neighbor, Tony Schneider, a retired deputy sheriff told Daily Mail Online that Seddique and Shahla Mateen are ‘the nicest people in the world.’

‘They are very Americanized, he said. ‘Just very good neighbors. I have known them for six years and have never had any problems with them.

‘My heart goes out to them — of course if they were involved they can rot in hell, but I otherwise I feel so sorry for them.’

Schneider said that Seddique — who he knows as Sid — can often be seen in his yard and walking up and down the street. He said he did not know his wife nearly as well.

‘I believe he is in insurance, he has done well for himself and they have three daughters, all went to college, who I believe are in the medical field.