The disgraced former Long Island-based state trooper who authorities said purposely shot himself and then falsely said that he was shot in the line of duty by a "dark-skinned" assailant on the Southern State Parkway last year, pleaded guilty Wednesday to multiple charges.

Thomas J. Mascia, 27, of West Hempstead, who resigned from the force in January, pleaded guilty in Nassau County Court Wednesday to a 3-count information in connection with the Oct. 30 shooting that resulted in a multistate search for a nonexistent shooter.

Mascia, who had been a trooper since 2019, pleaded guilty to charges of filing a false report, official misconduct and tampering with evidence after police said he shot himself and then lied about it.

Acting Supreme Court Justice Robert G. Bogle accepted Mascia's guilty plea and set sentencing for August 20. Mascia also signed an order of protection barring him from any contact with an individual whose identity was kept confidential in open court.

"It was a good plea offer and he was guilty and wanted to accept responsibility for his actions as he did from the moment I met him," said Mascia's attorney Jeffrey Lichtman, after court. "He's obviously got deep remorse and regret [for] what he did. But this is obviously the result of mental health issues."

Nassau District Attorney Anne T. Donnelly said Mascia’s ex-girlfriend, a nurse, was the subject of the protection order and may have been the motive for Mascia’s actions, although Mascia didn't provide authorities with a reason.

"Apparently she’s a nurse and he wanted to get maybe some sympathy from her and some attention from her," Donnelly said.

As part of the plea deal, the former trooper agreed to accept a 6-month jail sentence, 5 years probation and mental health treatment. Mascia also agreed to pay the New York State Police $289,511.32 for the three days of overtime doled out during the manhunt for a suspect authorities said didn’t exist.

Mascia's parents, Thomas Mascia and Dorothy Mascia, both pleaded guilty Wednesday to 4th degree criminal possession of a weapon. As part of their plea deal, they are expected to be sentenced to conditional discharges. Mascia's father is a former NYPD officer who is a convicted felon.

Mascia, who was fired earlier this year, had been suspended without pay since last November when the state police announced it was investigating the circumstances of the shooting and that it had stopped searching for the alleged shooter's vehicle.

Earlier this month, Mascia's plea hearing was derailed after he told the judge he did not feel well mentally.

Bogle halted the proceeding after several closed-door conferences between defense attorneys and prosecutors, saying: "I think it’s a good idea if we take a break."

Mascia was shot in his right leg, near his knee, on Oct. 30 at about 11:45 p.m. while on patrol after he said he approached a black Dodge Charger that he thought was stranded on the parkway near Exit 17 in West Hempstead, police have said.

Mascia told police that the alleged suspect was a "dark-skinned" male, driving what was believed to be a black, late model Dodge Charger with temporary New Jersey tags, rear tinted windows and custom matte gray dual-exhaust tips.

Mascia applied a tourniquet to his injured leg and called for assistance, police have said.

"Shots fired, shots fired, I’m hit," the trooper said, giving his location on the parkway, according to police radio transmissions on Broadcastify.com that Newsday reported following the shooting.

"I’m bleeding pretty good in the leg," the trooper said. "Got a tourniquet on."

Mascia was released from Nassau University Medical Center a day later. Hundreds of state troopers and Nassau County police officers gathered outside the hospital in a show of support.

Nassau prosecutor Jared Rosenblatt, the Homicide Bureau chief, said that Mascia shot himself in Hempstead Lake Park and then allegedly dumped the gun, a .22 caliber rifle, at his home, and returned to the Southern State where he reported that a man, who Rosenblatt called "a figment of the defendant's imagination," had shot him.

Investigators found what they said was an illegal gun in the parents' bedroom when they executed a search warrant at the Gruber Court home they shared with their son, prosecutors said.

Donnelly also previously said police found "close to $800,000" in cash inside the home that she said was "linked" to the trooper's parents. On Wednesday, she said the cash has been investigated and it was "legally" held by the parents.