Dozens of people are feared dead after a fire broke out during a rave at a converted warehouse in Oakland, California.
The authorities take into account that up to 40 people may have died in the fire, said the sheriff's office.
The fire department in the city earlier on Saturday said that nine people have been found dead, while 25 people are unaccounted for.
An unknown number of people were in the building when the fire broke out during a electronica party just after 23.30 local time Friday in Fruitvale outside San Francisco.
Most of the people who are found dead were in the second floor of the building, said Fire Chief Teresa Deloach-Reed to the East Bay Times. Another 25 people are still unaccounted for.
Electronica artist Golden Donna was playing during the concert at the premises Friday night, writes the BBC.
On social media many people miss friends or family members after the fire, and several of them on Saturday morning asked for their loved ones on the event's Facebook page.
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