India, June 3 -- Federal agents investigating an underground tunnel near the US-Mexico border that they believe may connect Tijuana to a street in San Diego have said that they uncovered a hidden trafficking operation that allegedly moved more than $45 million worth of cocaine through the passageway. The months-long investigation led to the seizure of more than a ton of cocaine and the arrest of four men accused of using the tunnel to funnel drugs into the United States, according to a June 1 news release from federal prosecutors in Southern California.

According to authorities, the tunnel connected Tijuana to a business known as "Buy 4 Less" in San Diego's Otay Mesa neighborhood, just north of one of the busiest border crossings in the ...