One firefighter was injured while battling a three-alarm fire in Crown Heights on Tuesday afternoon.
The blaze broke out at a four-story mixed-use building at 724 Nostrand Ave. just after 12 p.m., according to the FDNY. Engine Company 235 arrived on the scene first, and was met with heavy fire and thick smoke.
By 12:33 p.m., the fire had been upgraded to a three-alarm, with a team of 138 firefighters from 12 units working together to extinguish the flames. Clutter inside the building and choking smoke made the scene difficult to navigate, but the blaze was finally brought under control shortly before 2 p.m.
No civilians were injured in the blaze, and searches of the building — which contains a night club on the first floor and apartments above — were negative. One firefighter was transported to The Brooklyn Hospital Center with minor injuries, according to the FDNY.

The cause of the fire is still under investigation. A full vacate order was placed on the property while the Department of Buildings determines the structural integrity of the building, according to city records.