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Drugs tunnel between Mexico and US discovered

10 July 2012 Last updated at 10:51 BST

A 755ft (230m) tunnel used to smuggle drugs has been discovered running under the border between Mexico and the United States.

The tunnel linked a soon-to-be opened ice and purified water business in Sonora to a business in Arizona, the Mexican defence secretariat said.

Discovered by the Mexican army, the tunnel contains electricity, ventilation and small carts for transporting the drugs.