Mexico's attorney general says police have arrested a U.S. man for allegedly smuggling grenade parts to a powerful and dangerous drug gang. Authorities identify the suspect as Jean Baptiste Kingery. Police arrested him last week. Kingery is suspected of smuggling grenade parts across the U.S.-Mexican border to the Sinaloa drug gang. He allegedly bought the weapons over the internet and in stores. Mexican drug gangs frequently use hand grenades in their battle with police and soldiers, who are struggling to destroy the drug trade. Turf wars between drug gangs and their fights with police have made northern Mexico an extremely dangerous place to live or visit.