The fire was reported at 7:48 p.m. in the 4800 block of South Alameda Street, according to Margaret Stewart of the Los Angeles Fire Department.
The roof collapsed over an 80,000-square-foot building adjoining four different buildings, Stewart said.
Thick clouds of smoke, visible from afar, filled the sky as firefighters used aerial ladder trucks to fight the flames.
A fire broke out at the site on Tuesday, Stewart said.
The cause of the Thanksgiving fire was investigated.
“With our investigators on the ground, they will be able to determine the circumstances of this fire,” said LAFD Capt. Cody Weireter.
Fire fighters were on duty until late at night to extinguish burning areas.
The City Intelligence Service contributed to this report.
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