Seth Grinspan, 46
Detectives said that Grinspan and another transient had quarreled. Grinspan ran down the highway near the beach and collapsed. Passersby called police. Meanwhile, the suspect, a Latino man, 48, went to Will Rogers Beach and threatened a woman lifeguard. She locked herself into the lifeguard tower and called colleagues. The suspect, covered in blood, was taken into custody. Grinspan died where he fell.