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.

Developing: A police incident was reported at the UPMC Memorial hospital in West Manchester Township on Saturday morning.

Family members of patients at UPMC Memorial Hospital are waiting across the street from the hospital as a memorial grows at the West York police station in memory of the officer killed during a shootout in the ICU.

Police responded to an active shooter incident at a hospital in York, Pennsylvania, on Saturday morning and there is no ongoing threat, officials said. The prolific character actor had over 267 film, television, and video game roles throughout his career.

Three UPMC Memorial Hospital workers and three police officers were shot — one of them fatally — in what York County District Attorney Tim Barker described as an attempted hostage situation Saturday morning.

"We know that families and visitors are vital to helping patients heal, and we are working toward making visitation possible again."