Four people treated for serious medical issues at LA Marathon

Cool air - 59 degrees - cloudy skies and moderate humidity aided 24,000 Los Angeles marathon runners, plus tens of thousands of spectators, to enjoy the city's biggest 26.2 mile party on Sunday.

As of 2:30 p.m., firefighters had treated 72 people for medical problems during the race. Of those, 10 people were hospitalized, four of them with immediate, life-threatening medical issues.

In West Hollywood, an MTA bus on a marathon-caused detour scraped two parked cars on a narrow side street. Nobody was hurt in the mishap, on Cynthia Avenue at Palm Drive, a spectator said.

As of 3:30 p.m. all streets through mile marker 24, San Vicente Boulevard and 18th Street, were reopened to vehicle traffic, according to authorities. East of Brentwood, stragglers were reportedly using traffic lights and sidewalks to walk to the Santa Monica finish line.

Police reminded people that drones were not permitted over the marathon route and bags and packages should not be left unattended.