OAKLAND, Calif. (AP) —Officials in Oakland say the death toll from a fire at a warehouse during a dance party has climbed to 33.

Alameda County Sheriff's Sgt. Ray Kelly announced the latest figure at a news conference Sunday.

The number increased from 24 earlier in the day, as crews continued to comb through the charred building.

Oakland Mayor Libby Schaaf says prosecutors have launched a criminal investigation, but she did not provide specifics.

The fire ripped through a converted warehouse known as the "Ghost Ship" about 11:30 p.m. Friday during an electronic dance music party.

Officials believe 50 to 100 people may have attended the event.

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