Mexican Federal Police officers show April 14, 2009 to the press at their Command Center in Mexico City, a Browning .50 antiaircraft machine gun mounted on a van seized on the eve at a house in Sonora, northern Mexico, near the US border. Police also found a grenade launcher, five shotguns, a hand grenade, and scores of magazines and cartridges. A suspected female caretaker was also detained, authorities said. Getty Images logo Getty Images 10 months ago

Mexican Federal Police officers show April 14, 2009 to the press at their Command Center in Mexico City, a Browning .50 antiaircraft machine gun mounted on a van seized on the eve at a house in Sonora, northern Mexico, near the US border. Police also found a grenade launcher, five shotguns, a hand grenade, and scores of magazines and cartridges. A suspected female caretaker was also detained, authorities said.