Security forces kill five during gunfight in northern Mexico town

Mexican security forces killed at least five suspected cartel gunmen in a shootout on Saturday in a town near the U.S. border, authorities from the northern state of Coahuila said, during a moment of heightened bilateral tension over violent gangs.The Coahuila attorney general's office said in a statement that state security officials shot dead the five suspects during clashes in the small town of Villa Union, about 40 miles (65 km) southwest of the border city of Piedras Negras.Around midday, h