(SAN FRANCISCO ) — The illegally occupied Oakland warehouse where dozens of partygoers perished in a blaze does not appear in a database fire inspectors use to schedule inspections and may never have been checked for fire hazards, a firefighter with knowledge of the situation told The Associated Press on Thursday. Oakland fire officials are supposed to annually inspect commercial buildings for fire safety, with only single-family homes and duplexes exempted, according to a city website.