Workers have begun using concrete to close a narco tunnel that officials believe was build within the past year. The tunnel ...

US federal agents have uncovered a sophisticated “narco tunnel” equipped with electricity and a working ventilation system that smugglers had been using between El Paso, Texas, and Juarez, Mexico.

The "sophisticated cross-border tunnel" Jan. 8, according to the news release. Narco traffickers and human smugglers have used tunnels along the U.S. border to avoid detection for years.

A secret 1,000ft-long ‘narco’ underpass between Mexico and the US will be sealed off ahead of Donald Trump’s inauguration in ...