Suspect who killed police officer, held Pennsylvania hospital staff hostage visited ICU the week before

A gunman who held medical staff hostage before killing a police officer and wounding five others at a hospital in south-central Pennsylvania Saturday is believed to have visited the facility in the days leading up to the incident, authorities said.

​ A gunman who held medical staff hostage before killing a police officer and wounding five others at a hospital in south-central Pennsylvania Saturday is believed to have visited the facility in the days leading up to the incident, authorities said. Read More Breaking News, Latest News and Videos | CNN