Across Los Angeles, a series of wildfires fanned by the powerful Santa Ana winds have been leveling homes in the area for nearly a week, leaving a path of record-breaking destruction in their wake. The largest of the fires,

Three of the wildfires that started last week around Los Angeles have been fully contained as of Sunday morning local time.

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.