3 civilians, 3 firefighters injured in Upper West Side fire

3 civilians, 3 firefighters injured in Upper West Side fire

A four-alarm fire broke out inside a six-story residential building at West 107th Street and Amsterdam Avenue. FOX 5 NY's Antwan Lewis has the latest.

NEW YORK - A four-alarm fire broke out inside a six-story residential building at West 107th Street and Amsterdam Avenue, according to the FDNY.

Three civilians and three firefighters were injured in the blaze, but their injuries are minor.

What we know:

Officials say there was "heavy damage" to the roof space and the top floor of the building.

Thick plumes of smoke could be seen billowing from the top of the building early Tuesday morning. Residents say they saw the smoke and bits of debris falling as they evacuated the building.

Officials say the four-alarm fire began on the top floor of 201 West 107th Street, between Amsterdam Avenue, after a call came in at 8:20 a.m.

The Red Cross is now helping 45 people who have been displaced.

Timeline:

The fire spread across the top floor of the six-story building, leading the FDNY to issue a third alarm at 8:34 a.m. 

By 9:15 a.m. it was reported to be a four-alarm fire. 

Officials say dozens of crews responded and are working to get the flames under control.

What we don't know:

An investigation into what caused the fire is ongoing.