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Mexico targets cell accused of agent's killing

By Mariano Castillo, CNN
Sergio Mora Cortes, aka "El Toto" accused of the murder of U.S. immigration agent Jaime Zapata, stands at the Mexican Navy headquarters in Mexico City, on Monday.
Sergio Mora Cortes, aka "El Toto" accused of the murder of U.S. immigration agent Jaime Zapata, stands at the Mexican Navy headquarters in Mexico City, on Monday.
STORY HIGHLIGHTS
  • Boss of suspect arrested, linked to 3 other deaths
  • Bookkeeper for cartel cell also charged

(CNN) -- Mexican authorities are tightening the noose around the drug cartel cell allegedly responsible for the killing of a U.S. immigration agent this month.

Mexican marines arrested Sergio Mora Cortes, alias "El Toto," the leader of the Zetas cartel cell that operates in San Luis Potosi state, the federal attorney general's office said Monday.

Mora was the boss of Julian Zapata Espinoza, the cartel member accused of killing Immigration and Customs Enforcement agent Jaime Zapata on a San Luis Potosi highway on February 15.

He was captured in the city of Saltillo in a hotel where he was staying along with five other accomplices, the agency said.

The Mexican authorities did not tie Mora to the killing of the American agent. But they did link him to the killing of a public security chief in Nuevo Laredo and at least two other killings.

Mora reported directly to Miguel Trevino Morales, one of the Zetas' top leaders, the agency said. That made him a high-ranking trafficker who oversaw finances, transit routes, weapons and money in San Luis Potosi, the agency said.

Authorities seized six grenades, three luxury vehicles and nearly $16,000 from Mora.

In addition to the boss of the San Luis Potosi drug cartel cell, authorities on Sunday arrested the group's bookkeeper.

Luis Miguel Rojo Ocejo, known as "El Oso Rojo" or "Red Bear," handled finances for the cell linked to the U.S. agent's killing. Authorities did not link him directly to the agent's death.