The U.S. military successfully conducted a “kinetic strike” on a drug-carrying Tren de Aragua boat that departed from Venezuela, President Donald Trump announced on Tuesday.

The strike left 11 “narcoterrorists” dead and was conducted in international waters as the vessel headed to the United States, Trump said. “Please let this serve as notice to anybody even thinking about bringing drugs into the United States of America. BEWARE!” the president wrote.