Firefighters battling large 3 alarm fire in Harlem

A massive 3 alarm fire burned through a multi-story building in Harlem on Wednesday night.

What we know:

The fire broke out at a building near West 139th Street and Adam Clayton Powell Boulevard.

Multiple FDNY crews are on the scene, battling the fire.

The FDNY posted video of the fire on their X account.

What we don't know:

The cause of the fire is still unknown. 

The Source: This article was written using material from SkyFOX and FOX 5 crews. 

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