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 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 ...

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 ...

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

The hospital confirmed that all staff members of UPMC Memorial are medically stable and progressing in their recovery.

A gunman who held medical staff hostage before killing a police officer and wounding five others at a hospital in ...