Ortiz, 49, was shot and killed by police after holding staff hostage at UPMC Memorial Hospital. Here's what we know about him.

UPMC Memorial Hospital has reopened to visitors after a man took staff in the ICU hostage and an officer was killed on Saturday. A UPMC spokesperson says visitation remains limited to two people per patient and the hospital is no longer on EMS divert.

A physician’s assistant at UPMC Memorial Hospital claims he delivered devastating news to Diogenes Archangel-Ortiz in the days before the man returned to the ICU and opened fire, killing a

The gunman who opened fire inside Pennsylvania’s UPMC Memorial Hospital faced the death of a loved one who’d been in the ICU just days before the shooting.