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,

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.

Gov. Josh Shapiro on Saturday joined a cadre of health care workers and law enforcement officials in recognizing the service of West York Police Department officer Andrew Duarte, 29, who was killed in the line of duty earlier in the day.