for story update ... one rider has died.
Two motorcross riders were seriously injured when they collided at the Lake Elsinore Motorsports Park late Thursday morning, according to Cal Fire/Riverside County Fire Department.
The incident was reported at 10:21 a.m. at the park located off Cereal Street.
Both riders were transported to a local hospital via ground ambulance with major injuries, Cal Fire reported.
The riders' identities and their current medical condition is not being released by authorities.