Twelve people were hurt — one seriously — in a Washington Heights fire early Tuesday, according to the FDNY.

The blaze broke out on the fifth floor of the six-story apartment building on West 158th Street near Broadway around 4:30 a.m., officials said.

A dozen civilians were hurt — one of them with serious injuries, four with serious but non-life-threatening injuries and seven with minor injuries, the FDNY said.

The second-alarm blaze drew 25 units with 106 firefighters to the scene.

Firefighters were still on scene Tuesday morning.