Man killed in shark attack at California Beach

(CNN) - A man was killed Friday in a suspected shark attack at a southern California beach, authorities said.

Lifeguards at Solana Beach summoned emergency personnel at 7:20 a.m. (10:20 a.m. ET), said San Diego County Sheriff's Lt. Mike McClain.

The victim, who was between 55 and 60 years old, was brought to a lifeguard station, but was pronounced dead at the scene, according to a statement posted on the Solana Beach city Web site.

The victim was swimming with a group from a local triathlon training group, the city's statement said. His name was not released, but city officials said his relatives had been contacted.

–CNN's Paul Vercammen contributed to this report.