Federal investigators have shut down one of the most sophisticated tunnels they've every seen.
It spans the border between San Diego and Tijuana, Mexico, and is equipped with electricity, ventilation and a rail system.
'Highly sophisticated' drug tunnel found linking San Diego, Tijuana
They found more than eight tons of marijuana and 325 pounds of cocaine inside and now three suspects are facing federal charges.
Miguel Marquez is OutFront with the report.
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