At least 24 people are believed to be dead and more than a dozen others remain unaccounted for as multiple wildfires rage across Southern California.

A law enforcement task force has been set up to uncover what caused the fires. The local agencies involved — the Los Angeles fire and police departments and the county Sheriff’s Department, as well as Cal Fire — are considered to be among the most skilled in the country. The Bureau of Alcohol, Tobacco, Firearms and Explosives is leading the probe.

A new fire broke out last night in Ventura County, while two major fires in LA County are still at less than 50 percent containment after a week of burning.