Bangor fire crews spent Friday night battling a fire at an apartment house on Warren Street.

The fire was reported at around 9:30 p.m. Crews found heavy fire showing when they arrived, in the back of the building. Flames were seen shooting from the roof of the building, as crews worked to contain it. WABI-TV reports there were no people injured, but no word about pets. It's not clear how many people were displaced by the fire.

Crews were still fighting the blaze after midnight.

We'll update this story as more details become available.