Four fires broke out in Sacramento County early Wednesday morning, including a three-alarm blaze that destroyed or damaged three businesses at a Folsom Boulevard strip mall in the Rosemont area, officials said.

Authorities said the cause of the mall fire remains under investigation, but arson has not been ruled out. Damage to the mall, located at Folsom Boulevard and La Riviera Drive, was estimated at $1.2 million. The blaze damaged a karaoke bar, a massage parlor and a counseling service.