The gunman who held intensive care unit staff hostage at UPMC Memorial Hospital in Pennsylvania before killing a police officer and injuring five other people Saturday believed that more could have been done to save his wife,

A funeral service will be held later this week for a Pennsylvania police officer who was killed last weekend while responding to a gunman inside a hospital intensive care unit.

Diogenes Archangel-Ortiz was removed from the hospital by security the previous night following a diagnosis that there was no other treatment available for his wife, the official said.