U.S. Border Patrol agents shut down the construction of a 2,918-foot-long tunnel connecting Tijuana and San Diego with the aid of Department of Homeland Security officials and Mexican authorities.

The San Diego Sector Border Patrol said agents discovered a drug smuggling tunnel measuring 2,918 feet in total length, connecting San Diego and Tijuana in April.

Agents found the tunnel — which linked Tijuana and San Diego — in early April while it was actively under construction.

U.S. Border Patrol agents shut down the construction of a 2,918-foot-long tunnel connecting Tijuana and San Diego with the aid of Department of Homeland Security officials and Mexican authorities.

U. S. Border Patrol agents discovered a tunnel for smuggling narcotics running from Tijuana to San Diego, the department announced Wednesday.