FERGUS FALLS — Two firefighters were injured after an apartment fire in downtown Fergus Falls.

Fergus Falls fire department Capt. Chad Nelson said crews were called at around 10:20 p.m. Sunday and didn’t get the fire under control until around sunrise today. He said crews were still on scene working on hot spots this morning.

He said one firefighter broke his arm and is expected to have surgery today. Another was treated on the scene for heat exhaustion.

Five families were displaced from apartments but all got out safely.

The cause of the fire is still under investigation.