 Chihuahua, and particularly the border city of Ciudad Juárez, was the epicenter of Mexico's drug war as the battle between the Sinaloa Cartel and Juárez Cartel left thousands of dead.Since May 2008, Chihuahua had ranked at the top of the homicide list in the country.But by October 2012, the state of Guerrero surpassed Chihuahua as the state with the highest homicide rate in Mexico.