Birmingham firefighters battling commercial fire in north Avondale

Birmingham firefighters battling a commercial fire at 205 Customz in the 4000 block of 1st Avenue North, Saturday, August 23, 2014. (

BIRMINGHAM, Alabama -- Birmingham firefighters are battling a commercial structure fire in north Avondale, ABC 33/40 has learned. The fire broke out around 5:30 p.m. in the 4000 block of 1st Avenue North at 205 Customz. The blaze has since caused the roof to collapse as crews continue efforts to get the fire under control. Multiple fire companies are assisting at the scene, where firefighters are working in shifts to prevent heat exhaustion. It's unknown at this time how the fire started. No injuries have been reported.ABC 33/40 has a crew at the scene and will provide updates as more information is made available.