2 Spanish riders killed in California motorcycle race

SAN FRANCISCO -- Two Spanish racers were killed in a chain-reaction crash on the first lap of a World Superbike race.

The deaths occurred Sunday at Mazda Raceway Laguna Seca, Monterey County sheriff's spokesman Cmdr. John Thornburg said. The sheriff's office is not investigating the crash at the MotoAmerica Superbike/Superstock 1000 race, which appeared to be an accident, he said.

MotoAmerica identified the riders as 35-year-old Bernat Martinez of Alberic, Valencia, Spain, and Daniel Rivas Fernandez, 27, of Moana Galicia, Spain.