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

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.

A police officer who was shot to death while responding to an armed man with hostages inside a Pennsylvania hospital intensive care unit was remembered Friday as a dedicated public servant who did not hesitate to run toward danger and died a hero.