A hidden cross-border tunnel used to smuggle migrants and contraband between the US and Mexico will be sealed, Mexican border officials have said.

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

Discovered on January 10 by US and Mexican security agencies, the tunnel measures approximately 300 meters (1,000 feet) in length on the Mexican side and is equipped with lighting, ventilation and is

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,