Soldiers in Mexico have found at least 17 bodies in a grave in the southern state of Guerrero

The bodies were unearthed in the town of San Miguel Totolapan, which has been gripped by drug-related violence. The officials say they are searching for more bodies. In 2010, three mass graves were found in Mexico - each full of bodies dumped by drug cartel members. More than 31,000 Mexicans have died in drug-related violence since 2006. Mass graves have become a frequent discovery in parts of Mexico, as rival drugs gangs fight for control of smuggling routes.