SAN DIEGO (AP) -- Mexican authorities say about 10 tons of marijuana have been discovered inside a tunnel built to smuggle drugs from Tijuana to San Diego.
Mexican federal police said Thursday the tunnel extends about 2,600 feet (800 meters) and is lit, ventilated, equipped with a rail car system, and lined with metal beams to prevent collapse.
Sixteen people were detained on suspicion of drug trafficking after the tunnel was found Wednesday in a Tijuana warehouse. Authorities say the marijuana was wrapped in 873 packages.
It's unclear if the tunnel has an exit in the U.S. Immigration and Customs Enforcement spokeswoman Lauren Mack declined to comment.
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