Facebook Safety Check activated for Oakland Inferno that killed 9, and left 25 missing

Facebook Safety Check activated for Oakland Inferno that killed 9,...

The Oakland inferno that claimed nine lives and has emergency personnel preparing for as many as 40 victims has also triggered Facebook to initiate its Safety Check system for friends and family and neighbors to reassure their loved ones.

Check if Facebook Friends are safe, or register your own status here.

The Facebook feature automatically sends notifications to users as friends update their safety status.

On the page, Facebook users can ask their Facebook friends about their status, triggering a prompt from Facebook to check in as safe.

An Alameda County Sheriff, center, escorts a woman carrying flowers at the site of a warehouse fire Tuesday, Dec. 6, 2016, in Oakland, Calif. (AP Photo/Marcio Jose Sanchez) An Alameda County Sheriff, center, escorts a woman carrying flowers at the site of a warehouse fire Tuesday, Dec. 6, 2016, in Oakland, Calif. (AP Photo/Marcio Jose Sanchez) Photo: Marcio Jose Sanchez/AP Photo: Marcio Jose Sanchez/AP Image 1 of / 73 Caption Close Facebook Safety Check activated for Oakland Inferno that killed 9, and left 25 missing 1 / 73 Back to Gallery

The system debuted in 2014 and was primarily used for overseas terror attacks and disasters, but got one of its first major domestic usages during the Orlando nightclub massacre that claimed 50 lives including that of the shooter, and injured another 53.

Saturday's Oakland fire is the worst building fire in decades in Oakland. It tore through a funky, two-story artists collective packed with people attending a music party, authorities said Saturday.

The blaze ignited around 11:30 p.m. Friday in the large converted warehouse at 1305 31st Ave. at International Boulevard, in the Fruitvale neighborhood, while as many as 100 people were inside for a performance by the Golden Donna 100 Percent Silk touring electronic dance music show.