Officials are investigating a possible motive that led to a man entering the UPMC Memorial Hospital ICU where several staff members were shot and taken hostage on Saturday. ABC News reports that Diogenes Archangel-Ortiz,

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.

A memorial is growing as a Pennsylvania community mourns the loss of a police officer on Saturday. The officer was killed in the line of duty when a gunman opened fire inside the UPMC York Memorial Hospital.

The shooter has been identified as Diogenes Archangel Ortiz. He allegedly entered the hospital with a handgun and zip ties.

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