Sig Alert, 60 Freeway, Ontario 12:34 p.m.

The California Highway Patrol has shut down three lanes on the westbound 60 Freeway for a crash investigation. Officers issued a Sig Alert at 12:34 p.m. and shut down the carpool and two left lanes between Haven and Archibald avenues. The closure is expected to last until about 2:30 p.m., said CHP Officer Jaci Parent. CHP investigators are recreating a crash scene to take measurements and gather other information.