Tampa firefighters were called out to a house fire around 3 a.m. Wednesday. 

A fire sparked at a vacant home on 29th Avenue. Crews said no one lives in the home, but homeless people are known to stay there. 

Crews were able to put out the fire, despite difficulty from the power lines. 

Investigators are still working to determine what cause the fire. 

This is a developing story, please check back for updates.