[Slideshow] Drug-Smuggling Tunnel Between Mexico And U.S Discovered By Police

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Authorities seized 12 tons of marijuana and arrested 22 people following the discovery, the Associated Press reported.

The sting came after an undercover agent for US Homeland Security Investigations agreed to provide the drug smugglers with drivers and use of a warehouse in exchange for a $10,000 payment for each truckload of drugs moved.