Firefighters Sunday knocked down a fire in a room on the second floor of a three-story commercial building in South Los Angeles that was also held in check by the structure’s sprinkler system.

Five people were also escorted from the basement of the building at 901 E. 31st St., said Margaret Stewart of the Los Angeles Fire Department.

Firefighters dispatched at 5:10 a.m. to 901 E. 31st St. had the fire out within 26 minutes of their arrival, Stewart said.

No injuries were reported and a cause of the fire was under investigation.