Hazardous materials investigators are responding to San Pedro where a big rig containing lithium-ion batteries flipped over, trigging a partial closure of the 47 Freeway in the Long Beach area, authorities said.

A truck carrying lithium-ion batteries overturned in San Pedro, causing a fire and significant traffic disruptions.

SAN PEDRO, Calif. - Traffic was backed up on the 47 Freeway in San Pedro Thursday afternoon as firefighters battled a blaze set off by a big rig truck carrying lithium-ion batteries. According to the Los Angeles Fire Department, the crash was reported just before noon in the 900 block of North Seaside Avenue.