(CBS) WILDOMAR, Calif. A commercial structure fire Monday caused about $20,000 in damage to a

furniture store and two adjacent businesses in the unincorporated area of Wildomar, authorities said.

The blaze was reported at about 1:20 a.m. in the 31800 block of Corydon and at least 20 firefighters were called to the scene, according to the Riverside County Fire Department.

A sprinkler system put the blaze out at about 1:30 p.m., but the water damaged the store and two adjacent businesses, the fire department said.

No one was injured and the cause of the fire was under investigation.