US security alert issued in Matamoros after cartel leader arrest

The United States issued a security alert for its personnel and citizens in Matamoros, Tamaulipas, on October 29 after roadblocks and violence broke out following the arrest of a priority target linked to a Gulf Cartel faction. The US Consulate ordered its staff to remain inside its facilities while law enforcement activity continued across the city.

The Mexican army arrested Axel Cárdenas in Matamoros, according to Mexico's Defense Ministry. Cárdenas is believed to be second in command of one of the organizations forming the Gulf Cartel. The arrest took place in the border state of Tamaulipas, opposite Texas.

“Cartel members steal vehicles, set them on fire, and abandon them on central roads to hinder security force movements.”

Immediately after the operation, burning vehicles appeared at various points in the city, blocking central roads and hindering security force movements. Cartel members often steal vehicles, set them on fire, and abandon them on main arteries in response to arrests of their leaders.

Classes were suspended in the afternoon shift by Tamaulipas' Education Secretariat, and parents rushed to schools to collect their children. Matamoros Mayor Alberto Granados urged residents to stay in safe areas and avoid zones where roadblocks had been set up.

International bridges between Matamoros and Brownsville, Texas, temporarily closed and later reopened. The US State Department maintains a Level 4 travel advisory for Tamaulipas, the highest risk category, citing terrorism, crime, and kidnapping. The consulate did not state an estimated duration for the alert.