The student accused of shooting two people dead at Florida State University had been diagnosed with emotional dysregulation.

But Phoenix Ikner, 20, had come off the prescription medication at the time of the rampage, a source told CNN.

Ikner was identified by police as the suspect responsible for fatally gunning down two people and injuring six others at the Tallahassee campus last week.

The FSU student opened fire using his Sheriff’s Deputy stepmom’s handgun, according to investigators.

Police are yet to establish a motive and said it is too early to state whether his condition played any role in the shooting.

Ikner allegedly began firing at random and did not have any connection to the victims, investigators said.

Aramark Collegiate Hospitality regional vice president Tiru Chabba and FSU dining coordinator Robert Morales were identified as the two fatalities.

The suspect was also injured during the shooting and was taken to the hospital where he remains with ‘significant’ but not life-threatening injuries. 

Phoenix Ikner, the suspect accused of shooting two people dead at Florida State University, had been diagnosed with emotional dysregulation

The mass shooting unfolded at FSU’s Tallahassee campus on Thursday 

Ikner invoked his right to remain silent as he was apprehended and is expected to face several charges up to first degree murder when he is discharged from the hospital and taken to a detention center. 

Officials said Ikner’s stepmom is Leon County Sheriff’s Deputy Jessica Ikner, and that he had ‘access to one of her weapons, and that was one of the weapons that was found at the scene’.

Leon County Sheriff McNeil said at the press conference the gunman was a member of the department’s youth set-up and was involved in training programs, and described him as ‘steeped in the Leon County Sheriff’s Office family.’

Tallahassee Police Chief Lawrence Revell said the gun was previously used by his mother for law enforcement, but was her private handgun at the time of the shooting, because deputies ‘are allowed to purchase the handgun they used prior.’ 

Ikner’s former classmate have since said that he held ‘white supremacist’ beliefs and ‘espoused far right rhetoric’.

Speaking to NBC after the shooting, a student who was once part of a ‘political round table’ with Ikner revealed he harbored white supremacist views.

‘Basically our only rule was no Nazis — colloquially speaking — and he espoused so much white supremacist rhetoric and far right rhetoric as well,’ Reid Seybold said.

A witness on the scene told WFTV they saw a college-aged man exit the student union with a handgun, and another witness told the Tallahassee Democrat that they’d heard what sounded like ‘automatic gunfire.’

Officials said Ikner’s stepmom is Leon County Sheriff’s Deputy Jessica Ikner, and that he had ‘access to one of her weapons, and that was one of the weapons that was found at the scene’

Aramark Collegiate Hospitality regional vice president Tiru Chabba was killed in the Florida State University mass shooting on Thursday

Robert Morales was shot dead on the Tallahassee campus after a student opened fire

Social media was flooded with sickening footage and images as panic set in, including one showing a victim being carried to safety on the shoulders of paramedics.

Cowering students shared videos hiding under desks, as authorities continue to urge anyone in the area to remain away from the area and stay inside.

Several witnesses shared clips of students fleeing and seeking shelter, with others showing food, picnic blankets and bags that were left on a lawn after students scrambled to safety.