A Fillmore resident was killed Tuesday afternoon on Grimes Canyon Road, between Moorpark and Fillmore, near Egg City. Robert Retzinger, 47, died in a solo motorcycle accident while driving northbound on Highway 23 at 3:50 p.m. Retzinger was transported to Los Robles Hospital and Medical Center in Thousand Oaks where he was pronounced dead at 4:53 p.m. The crash is under investigation by the California Highway Patrol.