The former patient stabbed five people at the Turtle Creek Valley Mental Health facility in Munhall, Pa., according to an article on the Pittsburgh Press-Gazette website.
The assailant was armed with a knife and an air pistol, the article said.
County police also found two knives among his belongings and two more near where he fell after being shot.
The complaint said the attacker also poured an accelerant on the floor of an elevator in the building.
Preparing Healthcare Facilities for Wildfire Air Quality Events
UW Health Set to Open Expansion at East Madison Hospital
Central Ohio Primary Care Physicians Falls Victim to Cyberattack
The Role of Biophilic Design in Healthcare Facilities
TriStar Centennial Medical Center Invests $90M in Women, Children's Hospital Expansions