The authorities in the Dominican Republic said on Sunday that they had recovered cocaine from a speedboat that was recently destroyed in a U.S. military airstrike, part of the Trump administration’s campaign targeting Latin American criminal gangs and drug cartels.

It was the first time the Dominican Republic and the United States had carried out a joint operation against “narcoterrorism” in the Caribbean, the Dominican Republic’s National Directorate for Drug Control said on social media on Sunday.

It was also the latest development in what the Trump administration has characterized as a counternarcotics and counterterrorism mission in the Caribbean Sea, which has included U.S. military airstrikes on three boats this month.

President Trump has claimed the power to shift maritime counterdrug efforts from law enforcement rules to wartime rules, and as a matter of national self-defense, lawfully order the military to summarily kill drug-running suspects as if they were combatants on a battlefield. The strikes have been condemned by legal experts and Democrats, who say they are illegal.

It was unclear which airstrike the Dominican Republic’s announcement was connected to. The most recent strike, announced by Mr. Trump on social media on Friday, struck a vessel and killed three people aboard, whom the president referred to as “narcoterrorists” without offering more details. He also posted a one-minute surveillance video showing a speedboat being blown up.

The Dominican Republic’s drug control agency said in its statement that officials working with the U.S. Southern Command and the Joint Interagency Task Force South had detected a speedboat that was carrying narcotics, according to intelligence reports. The agency said the boat was heading toward Dominican territory and intended to eventually transport its narcotics to the United States.