U.S. Border Patrol agents and Homeland Security Investigations uncovered a man-made tunnel entering the U.S. from Mexico on Thursday. Agents discovered it in El Paso, Texas, near a storm drain system by the border wall during a security sweep of the area.

Border Patrol uncovers a cross-border tunnel from Mexico to El Paso, equipped with lighting, ventilation, and wood supports, used for smuggling.

A tunnel that has been used for a year is used to smuggle migrants, weapons and cash across the U.S.-Mexico border.

Mexican and US authorities on Friday discovered a clandestine tunnel under the Rio Grande River, which connects Ciudad Juarez in Chihuahua to El Paso in Texas. The passage was used for human trafficking,