Diogenes Archangel-Ortiz stormed the Pennsylvania hospital while being armed with zip ties and a revolve, killing one officer and wounding five others.

On Saturday, Archangel-Ortiz returned with a bag full of zip ties and a semiautomatic handgun, police said. He shot and wounded three hospital staffers — a doctor, a nurse and a custodian — and took them hostage inside the ICU, cops said.

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

Diogenes Archangel-Ortiz stormed the Pennsylvania hospital while being armed with zip ties and a revolve, killing one officer and wounding five others.

A gunman took hostages at UPMC Memorial Hospital in York, Pennsylvania, resulting in the death of Officer Andrew Duarte and injuries to five others.