At least nine people died at a California dance party late Friday when a massive fire broke out at the warehouse space where dozens of clubbers had gathered, officials said. Another 25 people are missing following the mid-rave blaze, KTVU reported. Fire officials have not yet been able to search the entire building, which was still burning early Saturday, so the death toll could rise. "We don't know the potential number of other victims," Fire Chief Teresa Deloche-Reed told the East Bay Times reported. The blaze broke out around 11:30 p.m. at a live-work space in Oakland's Fruitvale district. The building houses a group of artists and their studios, officials said. Between 30 and 70 people had gathered inside the space for a dance party featuring music by electronic band Golden Donna. By Saturday morning, fire crews were still working to put out the flames. The cause of the fire has not yet been determined. It's not clear if the warehouse was equipped with an emergency sprinkler system, and the first firefighters to arrive said they did not hear smoke alarms going off. There did appear to be fire extingishers in the building. Building resident Bob Mule, a photographer, escaped the blaze and tried to help a friend get out, too - but the flames grew too intense and he was forced to evacuate alone. "It was too hot, too much smoke. I had to get out of there," he told the local newspaper. "I literally felt my skin peeling and my lungs being suffocated by smoke. I couldn't get the fire extinguisher to work." Officials have not identified any of the victims. Panicked loved ones posted photos of the missing attendees on the dance party's Facebook page. Others who were at the event wrote that they were okay following the disaster.