Violence against healthcare workers is on the rise as seen by an attack at a Pennsylvania hospital. A gunman took hostages before exchanges of gunfire that killed a police officer and wounded five other people at a York County,

Investigators are still trying to determine why a man targeted a Pennsylvania hospital, taking workers inside the intensive care unit hostage and holding one staff member at gunpoint as her hands were bound by zip ties.

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.