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U.S. officials have suspended government activities and travel to a Mexican border city over a potential security threat.
Mexicali, a city directly across from Calexico, California, is the subject of a new security alert after officials received information about a potential threat.
In a statement, the U.S. Embassy and Consulates in Mexico said that government activities in and travel to Mexicali were suspended on Aug. 25.
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“We are alerting U.S. citizens of this potential threat,” the embassy said.
Officials urged Americans to avoid government buildings in Mexicali and remain aware of their surroundings.
U.S. officials suspended government activities and travel to Mexicali after receiving information about a potential security threat. (Juan Antonio Hernandez Avalos/AFP via Getty Images)
In addition, Americans were advised to seek shelter in the event of an incident, follow instructions from Mexican law enforcement and notify friends and family that they are safe.
“Follow instructions from Mexican law enforcement,” the embassy’s statement added. “Monitor local media for updates.”
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The threat involved a potential armed attack by Los Rusos, a criminal group, against law enforcement facilities in Mexicali, UPI reported.
The reported threat came days after Mexican authorities seized roughly 265 pounds of fentanyl from a warehouse in Mexicali, according to the same source.
U.S. officials urged Americans in Mexicali to avoid government buildings and remain aware of their surroundings following the alert. (Juan Antonio Hernandez Avalos/AFP via Getty Images)
Authorities estimated the seizure amounted to about 4 million doses.
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Mexicali, the capital of Baja California, is a major port of entry along the U.S.-Mexico border.
The capital of Baja California plays a major role in travel and commerce along the U.S.-Mexico border. (iStock)
Though not considered a major tourist destination, Mexicali is a busy hub for cross-border travel and commerce.
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More than 5.4 million personal vehicles and 3.1 million pedestrians entered the U.S. through Calexico in 2025, according to federal transportation data.
It is unclear whether the alert remains in place. Fox News Digital reached out to the U.S. Consulate General in Tijuana and the State Department for additional information.
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The warning comes as Mexico continues to grapple with cartel violence and organized crime.
More than 5.4 million personal vehicles entered the United States through Calexico in 2025, according to federal transportation data. (iStock)
Earlier this year, cruise ships bypassed Puerto Vallarta amid a wave of violence following the killing of cartel leader Nemesio Oseguera, known as “El Mencho.”
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The unrest prompted U.S. security warnings, while shelter-in-place orders were imposed in several Mexican cities before being lifted days later.