MONTERREY, Mexico (AP) -- An official in northern Mexico says local policemen allowed a drug gang to use a municipal jail to hold kidnap victims, apparently while ransom payments were being negotiated.
The security spokesman in northern Nuevo Leon state says four police officers from a suburb of the city of Monterrey are being held pending investigations into the case.
Jorge Domene said Thursday the scheme came to light this week when state and federal police freed two kidnap victims from jail cells in the Monterrey suburb of Benito Juarez.
Investigations indicate the officers were working for the Zetas drug cartel.
Vergara says that marines arrested eight members of the New Generation gang on Thursday, and the suspects told them where the bodies were hidden. The gang adopted the nickname "Zeta Killers."
Vergara said marines also arrested 12 members of the rival Zetas gang, including a man alleged to be their operations leader in Veracruz.