On Wednesday, Border Patrol agents revealed new information about the "longest cross-border tunnel ever discovered" that they learned about in August 2019, according to Border Patrol Agent Justin J. Castrejon. "Member agencies of the San Diego Tunnel Task Force will provide a press conference and an opportunity for questions regarding the discovery of the longest cross-border tunnel ever uncovered," said Castrejon. According to U.S. Border Patrol, the tunnel starts in Tijuana, in an industrial area approximately close to Otay Mesa. A small industrial building conceals the tunnel. Mexican authorities reportedly identified the tunnel entrance. The tunnel travels north into the U.S. bending slightly west and extending an "astonishing" 4,068 ft. from the border, totaling over three-quarters local CBS affiliate for Tampa Bay, Florida. We deliver the best in breaking news, live video coverage, and original journalism covering topics that matter most to Floridians. Subscribe for more; videos are updated daily! Show more