Wildfires burning in Los Angeles County have left five people dead and burned thousands of structures to the ground this week, becoming some of the most destructive the area has seen in decades.

At least 10 people are now confirmed to have died in Los Angeles wildfires, which have destroyed more than 10,000 structures in the area. Firefighters continue to battle the spread of the flames, while police are investigating whether some have been set deliberately.

LOS ANGELES (AP) — The archaic computer dispatch system for the nation’s largest sheriff’s department remained out of commission on Thursday after crashing on New Year’s Eve, forcing deputies to handle all calls by radio, authorities said.