13 bodies found in mass graves near Mexico City this year . Of those 13 , five have been identified as youths kidnapped from Mexico City bar . 12 people were kidnapped from after - hours bars in May , authorities say . Authorities on Thursday said they found a clandestine mass grave east of Mexico City . Four people have been arrested in the case .
13 bodies found in mass graves near Mexico City this year . Of those 13 , five have been identified as youths kidnapped from Mexico City bar . 12 people were kidnapped from after - hours bars in May , authorities say . Four people have been arrested in the case .