The U.S. Consulate General in Nogales, Sonora has limited U.S. government activities and travel to the city to essential movement during daylight hours only, citing threat information it has not publicly identified. The U.S. Embassy and Consulates in Mexico issued the advisory on Saturday. Americans in Nogales received a parallel alert: "We are alerting U.S. citizens of this threat and change in posture," the consulate's statement read.
Sonora's State Security Board contacted U.S. consular officials after the advisory was published. Mexican state authorities said they had no information establishing a concrete risk to the public but indicated that preventive security operations in Nogales would continue. Neither government identified a specific threat.
The alert reminded Americans that Sonora carries a Level 3 "Reconsider Travel" designation under the U.S. Travel Advisory. That standing designation now sits alongside Saturday's operational posture change, which moves government personnel from general advisory guidance to a concrete operational limit: essential movement, daylight hours only.
Consular guidance for Americans in the area
For Americans in or near Nogales, the consulate's advisory calls for six precautionary measures: exercise increased caution, remain aware of surroundings, seek shelter in the event of an incident, notify friends and family of safety status, follow instructions from Mexican law enforcement, and monitor local media.
U.S. lawmakers also urged people in the area to heed the warnings. Representative Andy Biggs, R-Ariz., said on X: "For Americans in or near Nogales - or who may have family members or friends there: please heed the guidance and warnings from the U.S. government." He added: "We are praying for the safety of U.S. citizens and personnel who may be in harm's way."
The nature of the threat that triggered Saturday's restriction in Nogales, Sonora remains publicly unidentified.