Some seven tons of the illegal weed was found in a semi-trailer that had entered the country at Nogales, The Arizona Republic reported Wednesday.
The 600 bundles had an estimated value of $12 million, officials with U.S. Customs and Border Patrol said.
The 26-year-old driver, from Nogales, Sonora, was turned over to Immigration and Customs Enforcement's Homeland Security Investigations.
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