SPRINGFIELD, Ill. (WAND) - Firefighters in Springfield battled flames on the back porch of a residence Thursday. 

According to the Springfield Firefighters Local 37 union Facebook page, crews responded before 1 p.m. to the 1000 block of N. 11th St. and found flames on the back porch of the multi-family structure. The fire occurred at a two-store wood frame duplex. 

Crews searched the attic and basement of the structure. An electric fan was used at the back door. 

Four people were displaced. The American Red Cross helped them find temporary shelter. 

After 1 p.m., crews were still on the scene overhauling the structure. It's unclear if there were any injuries. 

WAND News is working to learn more about what caused this fire.Â