Mendocino Street is blocked off Friday morning for an accident investigation. The Altadena Sheriff's station said that a call came in about a pedestrian being struck by a vehicle at 6:45 AM.
UPDATE 11:15 AM: California Highway Patrol confirmed that it was a fatal accident, but not much more at this time. Investigators are still on the scene.
UPDATE: Victim was identified as a 54-year-old Altadena man jogging eastbound on Mendocino, and was clipped by a Chevrolet that then ran into a Mercedes-Benz. Chevrolet was driven by a 58-year-old San Marino man. Identity of victim is still pending.