Police in Arizona find a cannon attached to a compressor on an abandoned pickup truck . Cannon was apparently used to fire bags of drugs over the border , authorities say . In a separate incident Thursday , U.S. agents found cans of Arizona plopped in an Mexico field . Aussie police make big meth haul . `` The smugglers were trying to pick these up before daylight , but there was probably an agent in the area , '' Adame said , explaining why the smugglers on the U.S. side never collected the canisters that pockmarked the tilled land . Cannon is believed to have been involved in that incident , too , Arizona agent says .
Police in Arizona find a cannon attached to a compressor on an abandoned pickup truck . Cannon was apparently used to fire bags of drugs over the border , authorities say . In a separate incident Thursday , U.S. agents found cans of Arizona plopped in an Mexico field . Cannon is believed to have been involved in that incident , too , Arizona agent says .