U.S. authorities say an incomplete tunnel designed to smuggle drugs into the United States was found in Tijuana, Mexico.
Immigration and Customs Enforcement spokeswoman Lauren Mack told The Associated Press on Thursday that the approximately 220-yard passage had lighting and ventilation.
The tunnel began under a bathroom sink inside a warehouse and did not cross the border into San Diego.
Mack said the Mexican army entered the tunnel Wednesday. No drugs were found and no arrests were reported.
The Mexican army planned a news conference Thursday afternoon in Tijuana.
It is the second major tunnel discovered in less than a week along the U.S.-Mexico border. A 240-yard completed passage was discovered near Yuma, Ariz. U.S. authorities say the Arizona tunnel was operational.
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