CNN’s Josh Campbell reports on what the Bureau of Alcohol, Tobacco, Firearms and Explosives is doing to try and pinpoint the source of the deadly wildfires that tore through the Los Angeles area.

The source of more than half of all wildfires in the Western US remains unknown, so the US Forest Service has teamed up with ...

Firefighters fought to maintain the upper hand on a huge and rapidly moving wildfire that swept through rugged mountains ...

The FBI would eventually call John Orr the most prolific serial arsonist of the 20th century, and when he went on trial in ...

On Monday afternoon, units from the Bureau of Alcohol, Tobacco, Firearms and Explosives, which is investigating the cause of the fire, and the Los Angeles Police Department arrived at a cul-de-sac ...

Victims of the L.A. County firestorms are grieving their losses as well as feeling frustration over delays in getting restarted with their lives, which L.A. police say makes them great prey for ...

Investigators are piecing together the cause of the wildfire that claimed 11 lives, destroyed thousands of structures, and ...

Speculation about the cause of Los Angeles' devastating fires is rampant. The official investigations are now underway.

Firefighters in Southern California are once again battling a wildfire, this time in Castaic in Los Angeles County, north of ...

The Justice Department will investigate state and local officials who stand in the way of President Donald Trump's ...