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 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.

Violence against healthcare workers is on the rise as seen by an attack at a Pennsylvania hospital. A gunman took hostages before exchanges of gunfire that killed a police officer and wounded five other people at a York County,