Infrared surveillance cameras at the Arizona/Mexico border have captured images of Mexican drug smugglers using a nine-foot-tall catapult to hurl 45-pound bags of marijuana over a border wall and into the U.S.

The smugglers had set the catapult up about 20 yards away from the wall, and would launch the drugs during the cover of night. U.S. authorities alerted the Mexican army to what was going on, but of course the smugglers were gone before the Mexican Border Police arrived.

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