OTAY MESA (NEWS 8) - An overturned tractor trailer caused a traffic back-up for trucks near the Otay Mesa Port of Entry on Tuesday.
San Diego police say it overturned on Siempre Viva Road near Melksee Street in the afternoon.
Heavy duty tow trucks were called to scene to flip the big-rig over.
Drivers heading to Mexico were delayed for several hours. The scene was cleared around 5 p.m.
It was unclear what caused the truck to overturn, but no injuries were reported.
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Chopper 8 over the scene around 2 p.m.: