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,

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.

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

Several people were wounded in the Pennsylvania hospital shooting on Feb. 22 Days before a hostage situation turned deadly, a physician assistant says he spoke to the man who killed a police officer and wounded staff at a Pennsylvania hospital and told him his loved one had died.

Ortiz, 49, killed a cop and injured five others when he stormed the UPMC Memorial Hospital in York, Penn. on Saturday morning -- armed with a pistol and zipties -- in what authorities say was a targeted attack.