The offensive against those believed to have been involved in the slaying of ICE special agent Jaime Zapata continued Monday, as Mexico's navy announced the capture of a top figure in the gang accused of the killing.
Mexican marines captured Sergio Antonio Mora, a regional boss for the Zetas drug gang.
Navy spokesman José Luis Vergara said that the suspect oversaw Zeta activities in the northern state of San Luis Potosí, where gunmen killed the U.S. agent and wounded another.
Vergara did not say if Mora was involved in the Feb. 15 attack that killed Jaime Zapata and wounded Victor Avila, both agents with U.S. Immigration and Customs Enforcement.
But he said that Mora, known as "El Toto," was the boss of Julián Zapata Espinoza, who was arrested last week and allegedly confessed that he took part in the shooting.
Mora and five other suspects, including a Honduran man, were detained Sunday at a hotel in Saltillo, capital of the northern state of Coahuila.
The Associated Press contributed to this report.