Lazaro Cardenas, Michoacan - Heavily armed gunmen ambushed a convoy of federal police on a highway in one of Mexico's drug battleground states Friday night, killing two officers and wounding three, officials said.
The unknown attackers hid on both sides of the road near the port city of Lazaro Cardenas and opened fire with a barrage of bullets when the convoy passed, Michoacan state prosecutors said.
The state, which is the base for La Familia cartel, has seen increasing fights among rival gangs and attacks on authorities involved in the anti-drug war.
Also Friday, military officials said soldiers seized 28,000 pounds of marijuana, seven vehicles and 18 high-powered weapons in Altar, Sonora, 35 miles south of the Arizona border. There were no reported arrests.
Drug violence has killed more than 15,000 people nationwide since President Felipe Calderon launched a crackdown on cartels after taking office in late 2006.