Police in the border city of Mexicali on Feb. 27 announced the discovery of a powerful improvised cannon used to hurl packets of marijuana across the border fence into California. Police told Mexico's Televisa network the device consisted of a plastic pipe and a metal tank that used compressed air from the engine of an old car. The apparatus fired cannabis-packed cylinders weighing up to 13 kilos, police said. It was confiscated after US officers informed Mexican police that they had found a large number of drug packages that appeared to have been fired over the border. (AP, Feb. 27)
Tech website Gizmodo points out that a cannabis catapult was found on the Arizona border in January 2011.