The FBI discovered the tunnel from the California border to Mexico. It was intended to smuggle slaves and drugs trafficking, announced U.S. attorney's office. Two tons of cocaine and seven tons of marijuana, totaling about $ 22 million, was seized by Federal agents who believe it is "the longest cross-border tunnel ever discovered." A tunnel length of 800 yards begins at home in Tijuana, Mexico, and ends in California in San Diego. Agents chased hot on the trail of alleged drug dealers after they noticed a commercial truck carrying industrial waste, filled with wood scraps to the outer industrial area. A few days later, agents discovered that it was the entrance to the tunnel. The tunnel was equipped with ventilation systems, lighting, and even a large Elevator that led to the bathroom inside the residence Tijuana, officials said. "On the surface, few could suspect that the traffickers moved the multi-ton boxes of cocaine and marijuana worth tens of millions of dollars in such a humble way through this rabbit hole in the ground," said U.S. attorney Laura Duffy in a press release. Six people were arrested in San Diego and charged with various charges of drug trafficking, police said. "This case is a strong reminder of the vulnerabilities that exist along the southwest border," said hunter Davis, Director air operations and border protection.