Update: Shooter at NYC hospital has reportedly been killed

Update: 

The BRONX — At least two people were shot Friday at a New York City hospital by a now-deceased gunman who was wearing a white lab coat, officials and sources said.

Gunfire broke out at about 2:50 p.m. inside the Bronx Lebanon Hospital at 1650 Grand Concourse, according to the NYPD.

At 4 p.m., an NYPD spokesman said a single shooter is dead inside the hospital.

Police said multiple people were shot, though the extent of their injuries was not immediately known.

Earlier:

NEW YORK — Multiple people were shot by a man wearing a white lab coat inside a New York City hospital, officials told WPIX.

Gunfire broke out at 2:50 p.m. ET inside the Bronx Lebanon Hospital, according to the NYPD. In a tweet, police told people to avoid the area around the hospital.

Multiple people were shot, though the extent of their injuries was not immediately known, according to police.

A police source told WPIX the shooter, who may be a doctor, has barricaded himself inside the facility.

Aerial footage of the scene showed the hospital surrounded by police cars and fire trucks.

This is a developing story; refresh for updates