MEXICO CITY — Mexico President Claudia Sheinbaum said Wednesday that surveillance drone flights by the U.S. government over Mexico are occurring in collaboration with and at the request of her government.

They come as U.S. President Donald Trump’s administration has increased pressure on Mexico to do more to stop the production of the synthetic opioid fentanyl that is smuggled north to the United States.

Earlier this month, Trump threatened, then postponed 25% tariffs on Mexican imports that he said were meant to push Mexico to take more action against its drug cartels. Trump also ordered on his first day in office the designation of some of Mexico’s drug cartels as foreign terrorist organizations. Those designations will be published in today’s edition of the Federal Register, according to a notice Wednesday.

The drone flights were reported Tuesday by the New York Times as a Central Intelligence Agency program aimed at locating fentanyl labs in northwestern Mexico.

— The Associated Press