A two-alarm fire burned through a multi-family apartment building in the Bronx Thursday, officials say.

The fire broke on the backside of 3080 Decatur Avenue near 204th Street in Norwood around 7:30 a.m. on the 3rd floor.

At least five people were displaced by the fire, and officials say no one was injured.

Witnesses say the fire burned on the roof before being put out.

The fire was under control a short time later. 

At least 100 firefighters responded to the blaze.