Investigators are trying to determine why a man targeted a Pennsylvania hospital, taking workers inside the intensive care ...

Investigators were still piecing together what happened a day after a man armed with a pistol and carrying zip ties entered a hospital's ICU and took staff members hostage before he was killed by ...

A senior law enforcement official informed on the inquiry told ABC News that the gunman who targeted the intensive care unit at the UPMC hospital in Pennsylvania on Saturday morning was reportedly ...