Authorities have identified the victim killed during a shooting on Thursday at the University of Pittsburgh Psychiatric Institute and Clinic, but the dead gunman is still unidentified.

The Allegheny County Medical Examiner's Office has identified the victim as Michael Schaab, 25. He was pronounced dead at around 3 p.m. the day of the shooting.

Pittsburgh Post-Gazette reported that Schaab is from Edgewood and according to The Associated Press, Schaab worked in the geriatric unit at the clinic and was recently engaged.

His mother, Mary Schaab, told The AP that she doesn't believe her son knew the shooter.

The gunman was shot dead by police, the news organization reported. Police are having difficulty identifying him because he wasn't carrying identification and his fingerprints yielded no results, according to reports.

The shooter was reportedly armed with two semiautomatic handguns. He entered the Western Psych building shortly before 2 p.m. and opened fire, according to the Post-Gazette.

He exchanged fire with University of Pittsburgh police and was killed within minutes of the shooting, which left two people dead and seven others injured.

The injured were taken to University of Pittsburgh Medical Center and all but one suffered gunshot wounds. They are all expected to make a full recovery, according to the Post-Gazette.

Police are still unsure at this time what was the motive behind the shooting.