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SAN DIEGO – State Route 52 in Tierrasanta was closed late Tuesday as crews battled a truck fire.

Flames broke out under the hood around 10:30 p.m. near Santo Road but did not spread to the trailer, according to California Highway Patrol.  Firefighters also extinguished flames that spread to nearby vegetation.

The truck driver had minor injuries and was treated at the scene.

CHP said two motorists were involved in a small crash when they pulled over to help. Neither driver was injured.

SR-52 reopened before Wednesday’s morning commute.