TULSA, Oklahoma - Tulsa firefighters say a woman died after an RV caught fire early Tuesday.

The fire department got the call to the 800 block of North St. Louis at about 3 a.m.

Firefighters called the state Medical Examiner's Office after putting out the fire and finding the body inside. 

They say a man was able to escape the RV by the time firefighters arrived.

Investigators are not sure what caused the fire.