Oakland Fire Chief Teresa Deloach Reed said most of those who perished in the blaze that started about 11:30 pm (1300 IST) yesterday were thought to have died on the upper floor of the two-story warehouse known as Oakland Ghostship.
"It must have been a very fast-moving fire," she told reporters.
It was not immediately known what sparked the inferno at the electronic dance music party attended by an estimated 50 to 100 people.
"We are prepared for several dozen fatalities," Sergeant Ray Kelly, of the Alameda County Sheriff's department, told reporters. "We are prepared to deal with 30, 40 deceased people."
He said some of the missing were from overseas, making identification of the victims -- thought to be in their 20s and 30s -- more difficult.
The warehouse, which housed an artist collective, had numerous partitions that had been added and a makeshift stairwell built from pallets.
"There wasn't a real entry or exit path," she said.
"I don't know where the fire started, but I do know that the way the building was situated made it difficult for people to escape."
Firefighters were hampered in their efforts to put out the blaze by clutter.
"It was filled end to end with furniture, whatnot, collections," Reed said. "It was like a maze almost."
She added that it appeared no smoke detectors were activated in the building, which also had no sprinkler system.
Friends and family of partygoers went to social media to try and find news about their loved ones, with some posting information on the event's Facebook page.
"Please tell me you are safe," one woman wrote, adding a friend's name, while others posted prayers.
The rave party featured a little-known act called Golden Donna and several other performers. It was unclear if any of the DJs were among the dead.
"I literally felt my skin peeling and my lungs being suffocated by smoke," Bob Mule, a photographer who lives in the building, told Fox television affiliate KTVU. "I couldn't get the fire extinguisher to work."
Disclaimer: No Business Standard Journalist was involved in creation of this content
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
