Investigators are trying to determine why an armed man targeted a hospital in the US state of Pennsylvania, killing one officer and injuring several medical staffers. Bearing a pistol, the armed man ...

A man armed with a pistol and carrying zip ties entered a Pennsylvania hospital’s intensive care unit Saturday and took staff ...

A man who took hostages at UPMC hospital during a shooting that killed a police officer and wounded five others highlights ...

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 ...

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

The chief of the Northern York Regional Police Department said one of the officers injured in Saturday's mass shooting at ...

State police troopers applied a tourniquet to the officer's leg after he had been injured, police chief wrote in a statement.