Mexican drug gangs threaten Arizona police

Mexican cartels are making direct death threats to U.S. law enforcement officials in Nogales, Arizona, the police chief there has said. The threats began after off-duty police officers from the Nogales police department seized several hundred pounds of marijuana from a Mexican drug smuggling operation they stumbled upon while horseback riding in the eastern fringes of Nogales. The smugglers in the incident managed to flee into Mexico before they could be detained, Nogales Police Chief Jeffrey Kirkham said. It was unclear which Mexican drug cartel was making the threats against the Nogales police department, but Kirkham said there is a turf war on the other side of the border in Nogales Sonora, Mexico, between the Sinaloa cartel and the Juarez cartel.