All southbound lanes of 405 Freeway shut down for hours in Costa Mesa after deadly crash overnight

COSTA MESA, Calif. (KABC) -- All southbound lanes of the 405 Freeway were shut down for several hours in the Costa Mesa area Wednesday morning, following a deadly crash overnight.

The initial incident, which involved multiple cars, happened around 11:30 p.m. Tuesday near Harbor Boulevard. At least one person was killed.

All lanes remained closed well into the next morning, snarling the commute for drivers. AIR7 was over the scene where several cars involved in the crash were still strewn across the roadway.

At least one lane was reopened around 7 a.m.

DEVELOPING: We will add more details to this report as they become available.