An offshoot of the main tunnel was also discovered, they added, running 3,529 feet into United States territory but with no opening to the surface. Image Tracks laid in the nearly mile-long tunnel beneath the United States-Mexico border. Credit... U.S. Customs and Border Protection AgencyThe American authorities said that no arrests had been made in relation to the discovery and that no drugs had been found inside the tunnel. That tunnel was one of the longest ever built by the cartel, though it did not cross the border. After the discovery of the latest tunnel the United States border agency said that the Mexican authorities had identified the opening on the southern side and that American investigators had then mapped the entire construction.

Source: New York Times January 30, 2020 12:26 UTC