A gunman opened fire at Bronx-Lebanon Hospital Center in the Bronx, New York, on Friday, killing one and injuring several others.
The suspect, who took his own life, was identified as Henry Bello, a former doctor at the hospital, police sources told ABC News. Officials said he was armed with an AR-15 assault rifle that he had concealed underneath his lab coat.
In addition to a female doctor who was killed, six others were injured in the incident, official said. Three of the injured are in critical condition.
Investigators believe the shooting was likely a targeted act of workplace violence, according to sources.
Two years ago Bello resigned from Bronx-Lebanon Hospital before he was terminated amid sexual harassment allegations, police sources told ABC News.
New York ABC station WABC reported a heavy police presence outside of the hospital in the wake of the shooting incident.
Local agents with the Bureau of Alcohol, Tobacco, Firearms and Explosives responded to the scene.
New York Mayor Bill de Blasio called the incident a “horrific” instance of workplace violence.