UPMC announced this morning via a Facebook post that it has closed Memorial Hospital in West Manchester Township to visitors in the wake of a hostage incident Saturday that left one police officer dead, two injured and several staff members injured. The health care system did not say when visitors to patients would once again be welcome.

An officer was killed and multiple people were injured in a shooting reported at UPMC Memorial Hospital on Innovation Drive and Roosevelt Avenue in York County on Saturday afternoon. West York Borough Police say one of their officers has been killed.

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,