NEW YORK (KGO) -- Police say a doctor opened fire at a New York City Hospital on Friday, killing another doctor and injuring six other people before turning the gun on himself.
RELATED: What we know about the doctor who opened fire inside NYC hospital
Shots rang out at about 2:55 p.m. on the 16th floor at Bronx-Lebonon Hospital, located in the Bronx.
Police said a former employee at that hospital -- who sources have identified as 45-year-old Dr. Henry Bello -- opened fire with an assault rifle, injuring six people on the 16th floor.
The gunman then went up to the 17th floor, police said, where he shot and killed a woman before trying to set himself on fire. The hospital's sprinklers were activated during this time, knocking down the fire.
PHOTOS: Images from the scene
New York City Mayor Bill de Blasio said the woman killed was a doctor, and some of those wounded are also doctors who "are fighting for their lives."
Watch the mayor's full remarks here:
The mayor added that this appears to be a workplace dispute and not an act of terror.
RELATED: Witnesses recount horror inside deadly Bronx hospital shooting
People inside the hospital took cover, blocking off door access and taking cover. Someone inside the hospital posted this photo showing a barricaded door.
People were seen leaving the hospital with their hands up, being led out by police.
The FBI confirmed this shooting does not appear to be terror-related:
Stay with ABC7 News for the latest details on this developing story.