A fire threatened to destroy a strip mall in the Rubidoux neighborhood of Jurupa Valley on Wednesday evening, July 28, Cal Fire/Riverside County Fire Department said. The fire was first reported at 5:18 p.m. in the 5700 block of Mission Boulevard and produced heavy smoke. Firefighters arrived to find three of the four units engulfed by flames, said Capt. Richard Cordova, a Fire Department spokesman. The fire appeared to have started in a grocery store, he said. Other businesses included a dentist office and laundromat.