UPDATE: (12:18PM): All southbound lanes have been reopened. 

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Two southbound lanes of I-5 are closed after a big rig caught fire early Sunday morning. 

The car fire started just before 5:30a.m. Officials with the California Highway Patrol said no one was hurt, but two lanes would remain closed until environmental health arrives to condemn the truck load. 

Officials said the truck was carrying produce. 

No one was injured. 

This is a breaking news story, check back for updates.