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 49-year-old gunman was shot and killed by police after they said he held multiple UPMC staff members hostage and shot multiple people.

"Our hearts are heavy today as we mourn the loss of two heroic Virginia Beach police officers who were tragically killed in the line of duty last night. Our thoughts and prayers are with the families, the Virginia Beach police department, and the law enforcement community," Rep. Jen Kiggins, whose district in Congress includes Virginia Beach, said.