A mass shooting at UPMC Memorial Center has left the gunman and a police officer killed and multiple hospital staff injured.

The man who authorities say entered a Pennsylvania hospital with zip ties and a pistol over the weekend had recent contact ...

Violence against healthcare workers is on the rise as seen by an attack at a Pennsylvania hospital. A gunman took hostages ...

The man accused of opening fire on a suburban Chicago Independence Day parade, killing seven people, is about to stand trial, ...

Investigators were still piecing together what happened a day after a man armed with a pistol and carrying zip ties entered a ...

The man who authorities say entered a Pennsylvania hospital with zip ties and a pistol over the weekend had recent contact ...

An officer was killed, and six others were injured after a man armed with a pistol and zip ties entered into a Pennsylvania ...

The mother of the police officer who was killed while responding to a shooting at a Pennsylvania hospital is speaking out. It ...

"Me and my husband arrived here just minutes before it happened or while it was happening, we were walking in when the police ...

The suspect, Diogenes Archangel Ortiz, entered the hospital with handgun and zip ties Saturday morning and took several staff members hostage, state officials said.