MEXICO-CRIME-VIOLENCE-KIDNAP-MASS GRAVE

Mexican police officers stand guard on August 22, 2013 at an entrance of a park in the municipality of Tlalmanalco, some 30 km southeast of Mexico City, where at least 7 bodies were discovered in a mass grave. Mexican authorities dug up the muddy mass grave and were investigating Thursday if the remains belong to 12 young people whose kidnapping in May shocked the capital. Mexico City's top prosecutor, Rodolfo Rios, said the remains of seven people have been recovered since the search began in a park on Wednesday and that workers are still digging for more bodies. The victims were kidnapped from a downtown bar in broad daylight on a Sunday morning three months ago in a case that raised concerns about security in Mexico City, which has been relatively immune from the country's drug cartel violence. AFP PHOTO/RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP via Getty Images)