Explosion at a California fireworks warehouse sets off fires and forces evacuations

Authorities say an explosion at a fireworks warehouse in northern California has caused several fires, sending black smoke into the air and forcing some evacuations. There were no immediate reports of injury. People were urged to avoid the area of Esparto and Madison for several days following the Tuesday night explosion, which set off multiple fireworks and caused a large fire that led to other spot fires and collapsed the building. The Yolo County Sheriff's Office says the cause of the explosion is under investigation. Esparto is in a rural area about 40 miles northwest of Sacramento.