The Federal Aviation Administration announced Friday a temporary flight restriction barring unauthorized drone activity along the entire U.S.-Mexico border.

The measure, issued jointly with the Department of Homeland Security and the Department of Transportation, prohibits drone operations from the surface to 400 feet above ground level within one nautical mile north of the border. It takes effect in the coming days and runs through October 2027.

Officials cited more than 1,000 drone incursions per month along the southern border. Mexican cartels have increasingly deployed the devices to drop drug packages and monitor trafficking routes and law enforcement movements.

Defense Secretary Pete Hegseth stated that the restrictions will give commanders greater awareness and options to defend the homeland. He added that the military will shoot down any cartel drone that threatens America’s sovereignty.

Transportation Secretary Sean P. Duffy described the action as a continuation of President Donald Trump’s border security efforts. Homeland Security Secretary Markwayne Mullin said it will help counter cartel drone threats and protect personnel.

The restriction builds on prior measures, including agreements for high-energy laser counter-drone systems deployed along the border. Military officials have reported a significant drop in cartel drone activity in some sectors following the use of such technology.

Drone operators must obtain permission through Customs and Border Protection to fly in the restricted zone. Unauthorized flights risk interference or destruction by federal authorities under existing counter-unmanned aircraft system authorities.

The policy applies to all unauthorized drones, including recreational models, and covers populated areas near the border in states including California, Arizona, New Mexico, and Texas.