An officer was killed, and six others were injured after a man armed with a pistol and zip ties entered into a Pennsylvania hospital's intensive care unit Saturday afternoon. Police were called to UPMC Memorial Hospital on Innovation Drive and Roosevelt Avenue in York County,

Authorities say a shooter entered UPMC Memorial Hospital's ICU and took staff members hostage before he was killed by police in a shootout.

A gunman was killed after shots were fired at UPMC Memorial Hospital in York County, Pennsylvania, on Saturday, a hospital official told the Associated Press. Officials with UPMC told CBS News that a gunman was at the hospital and was "apprehended" after shots were fired.