The Alameda County Medical Examiner says burns or other injuries did not play a role in their deaths last year.
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RELATED: Ex-employees say Ghost Ship founder disregarded fire hazard warnings
The victims were unable to get out of the burning warehouse with several illegal living spaces inside during a party.
PHOTOS: A look inside the Oakland Ghost Ship collective warehouse
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Investigators have still not announced what caused the fire or any potential criminal charges.
If you are trying to locate a loved one, or need information call 510-382-3000.
Click here for all ABC7 News stories, videos, and photos from the Ghost Ship warehouse fire.