The official cause of the fires remained under investigation Friday, officials said.Start the day smarter. Get all the news you need in your inbox each morning. A Red Flag Warning was in effect through Friday for areas of Los Angeles,

Mandatory evacuation orders are still in place. As of 11 a.m. local time Monday, all areas under evacuation orders and warnings are placed on a curfew from 6 p.m. to 6 a.m. local time, according to Cal Fire.

Watch the heartbreaking effects of the LA wildfires as they engulf the hills of California. The wildfires have hit again in Southern California as thousands of residents near Castaic were under evacuation orders.