Florida nurse Grant Amato, 29, allegedly killed his parents and brother after stealing $200,000 to wire to a Bulgarian webcam girl

A Florida nurse accused of murdering his parents and brother allegedly stole $200,000 from them to send to an online webcam girl.

Grant Amato, 29, has been charged with three counts of first-degree premeditated murder in the shooting deaths of Chad Amato, 59, Margaret Amato, 61, and 31-year-old Cody Amato.

In the three months before the shooting, the suspect stole $200,000 from the victims to fund an online pornographic relationship with a woman in Bulgaria, according to a Seminole County arrest warrant.

Grant allegedly wired the stolen funds to the woman, with whom he had been communicating since June on the adult website, Cam Girls.

The suspect's surviving brother told investigators that Amato had been sending the woman large sums of money and that she knew where the family lived, which concerned Margret Amato.

Grant has been charged with three counts of first-degree premeditated murder in the deaths of Chad Amato, 59, Margaret Amato, 61, (left) and Cody Amato, 31, (right)

Grant Amato told investigators his parents gave him an ultimatum after discovering the theft: Complete a 60-day internet and sex addiction program, or leave the family home.

Grant Amato checked into a facility in Fort Lauderdale on December 22, two days after he was reported missing by his mum and dad.

They told Seminole County Sheriff's Office deputies their son was suffering from depression, had access to firearms and they were '100 percent convinced he will try to harm himself', according to the incident report seen by Click Orlando.

Grant Amato checked out of the facility on January 4, according to the arrest warrant.

A motive for the gruesome triple homicide has not yet been released. Grant's brother Cody is circled in the middle, Grant is circled on the far-right

The three victims were discovered in the home that Grant Amato shared with his parents in Chuluota after a coworker reported Cody Amato, who lived in Orlando,. hadn't shown up for work.

Police discovered bodies in the garage, kitchen, and an office in the home on Friday morning. They had all suffered gunshot wounds.

Several weapons were found at the property, but police say a number of them seemed to be missing.

Amato was arrested without incident around 1am on Monday.

Several weapons were found at the property, but police say a number of them seemed to be missing. Grant is pictured

Grant (pictured) was arrested without incident around 1am on Monday. He is being held without bond

He has been booked into the John E Polk Correctional Facility in Sanford and is being held without bond.

Grant was initially named a person of interest in the case after his parents and brother's bodies were found on Friday morning.

Authorities believe the family members were killed sometime between 10pm on Thursday and 7am on Friday.

Authorities named Grant a person of interest in the case on Friday and released a photo of his white 1996 Honda Accord in the hope of tracking down the suspect

There were no signs of forced entry, so investigators immediately believed the murderer was likely known to the victims.

Grant had previously been arrested in June on a graft theft charge at AdventHealth Orlando, where he had worked as a nurse

Seminole County Sheriff Dennis Lemma publicly named Grant a person of interest in the case on Friday.

He said Grant was armed and dangerous and released an image of his white 1996 Honda Accord leaving the area.

Police located Grant at a hotel in Orange County on Saturday and he was taken into investigative detention.

He was released on Sunday after cooperating with investigators, but was taken into custody on Monday after deputies obtained a warrant for his arrest.

Grant had previously been arrested in June on a grand theft charge at AdventHealth Orlando, where he had worked as a nurse.

Colleagues had accused Grant of stealing vials of Propfol, a powerful sedative.

Authorities were summoned to the hospital on reports of a suicidal person, but after an examination Grant was deemed not to be a threat to himself.

Grant admitted to stealing the drugs, claiming he administered them to patients who weren't 'adequately relaxed' by their prescribed medication.

He was not prosecuted for the theft.