TULSA, Oklahoma - Fire investigators are trying to figure out what started a Tulsa house fire early Tuesday. 

Firefighters say they arrived a little after 2 a.m. to find the vacant home at Oklahoma and Wheeling on fire.

They say the flames damaged one of the rooms, but were able to keep it contained.

No one was living at the home, but neighbors told firefighters they have seen some squatters in the area lately.

No one was hurt.