The man who authorities say entered a Pennsylvania hospital with zip ties and a pistol over the weekend had recent contact with the hospital's intensive care unit, where he took staff members hostage and was killed in a shootout that left a police officer dead and others injured.

The unease growing inside Nancy Duarte Matarese on Saturday quickly blossomed into full-on dread as she found herself being escorted to a small family room inside WellSpan York Hospital.