A large vacant commercial building was burning Thursday afternoon at the corner of Marks and Nielson avenues in Fresno, west of Highway 99.
The fire started about 3:40 p.m. The building was formerly used for storage of cotton, Fresno Fire Department Battalion Chief Ron Stogdell said.
He said the building, which covers about 30,000 square feet on an 80-acre property, has burned twice before over the past four years.
For safety reasons, Stogdell said firefighters were not going inside the building, opting to keep the fire under control from outside.
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Half the building was already burned from previous fires, he said, and about 20% of the building was aflame when firefighters arrived.
The cause of the fire was not known Thursday afternoon, but Stogdell said the area has had many fires caused by homeless people.