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.

A police officer was killed Saturday after responding to a shooting at UPMC Memorial Hospital located just outside of Harrisburg, Pennsylvania, where a gunman took several hostages and injured at least five other people before he was shot dead.