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,

Update: A gunman stormed a Pennsylvania hospital’s ICU and took staff hostage before he was killed by police on Saturday. An officer also died in the shootout.

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