A suspected member of the Los Zetas drug cartel was arrested and confessed to 75 murders, officials in the northern Mexican state of Nuevo Leon said Monday.

Enrique Aurelio Elizondo “confessed that he is a member of a Los Zetas cell that operated for the past three years in the cities of Cerralvo, Paras, Agualeguas and General Treviño,” state Security Council spokesman Jorge Domene said.

Elizondo “participated in the kidnappings and murders of 50 passengers who were on a bus that came from Reynosa, Tamaulipas, while it was passing through the bus station in Cerralvo” in January 2011, Domene said.

Elizondo’s Zetas cell kidnapped people from two other buses and murdered 44 passengers suspected of being gunmen from the rival Gulf cartel, the security official said.