Big gunbattle in Mexico City wounds 4 officers

Mexico City police engaged in a shootout Tuesday with more than a dozen gunmen armed with a .50 caliber sniper rifle, grenades and a machine gun, authorities said. According to City police chief, one officer is in serious condition and three other officers were also wounded during the shootout. The shootout took place in Topilejo, a town on the city's rural, southern edge. The mountains on the city's southern rim have long been used by kidnap gangs and other criminals for hideouts.