Authorities described the shooting of a gunman who opened fire at a Pennsylvania hospital as “absolutely justified, beyond any and all doubt.”

The man who authorities say entered a Pennsylvania hospital with zip ties and a pistol over the weekend had recent contact with the hospital's intensive care unit, where he took staff members hostage and was killed in a shootout that left a police officer dead and others injured.

A gunman who held medical staff hostage before killing a police officer and wounding five others at a hospital in south-central Pennsylvania Saturday is believed to have visited the facility in the days leading up to the incident,

A gunman, armed with a handgun and carrying zip ties, went inside UPMC's ICU, and took staffers hostage before he was ultimately killed by police in a shootout, the York County DA said.

An officer was killed, and six others were injured after a man armed with a pistol and zip ties entered into a Pennsylvania hospital's intensive care unit Saturday afternoon. Police were called to UPMC Memorial Hospital on Innovation Drive and Roosevelt Avenue in York County, Pittsburgh Action News 4's sister station WGAL reported.

Cops encountered Archangel-Ortiz holding a female staffer at gunpoint with her hands bound, officials said. The officers engaged Archangel-Ortiz in a firefight, killing him. Archangel-Ortiz wounded two cops and killed a third, who was identified as Andrew Duarte, 30, of the West York Borough Police Department.

A gunman and a responding officer were killed after shots were fired Saturday at a hospital in central Pennsylvania.