Birmingham firefighters are battling a massive blaze Thursday night at a business in Smithfield, officials said.

Birmingham Fire and Rescue Service personnel received a call of a commercial fire in the 700 block of 1st Avenue North around 9:36 p.m. Thursday, said Capt. Orlando Reynolds.

Firefighters encountered “lots of fire and smoke” at the one-story commercial building, Reynolds said.

“They are in a defensive posture right now,” the captain said, indicating that it was not yet safe for firefighters to enter the building.

There were no injuries and no one was trapped, Reynolds said.

One person was on the roof of an adjacent building but firefighters were able to get them out of harm’s way, the captain said.