Authorities in Southern California said Wednesday that a Navy SEAL had been arrested on suspicion of beating and stabbing a man to death about an hour after the two were involved in a fistfight.

Santa Monica police Lt. Saul Rodriguez said Theo Andrew Krah, 28, was arrested in San Diego Monday in connection with the unidentified man’s death.

Rodriguez said officials were called to the Santa Monica Pier Saturday to break up a fistfight between Krah and the man at about 4 p.m. Nobody was arrested or injured, he said.

About an hour later, the other man was found dead about a half-mile from the pier, suffering from head trauma and multiple stab wounds, police said. The man died at 4:40 a.m. Sunday at a local hospital.