Seven people were injured when a blaze broke out at a Brooklyn cigar bar early Saturday.

Video posted on the Citizen app showed firefighters battling smoke outside the Blew Smoke lounge on snow-piled Washington Avenue in Prospect Heights, where about 80 Bravest and EMS workers battled the blaze for about an hour before bringing it under control around 2:40 a.m.

At least six civilians were injured, with five of them treated for minor injuries at a local hospital and the sixth refusing medical attention. It’s unclear who the seventh person was, but they also suffered minor injuries, the FDNY said.

The cause of the fire remains under investigation, officials said.