SAN JUAN, Puerto Rico (AP) — Federal agents seized $6 million worth of cocaine and arrested two men from the Dominican Republic in waters south of Puerto Rico, officials said Thursday.

More than 660 pounds (300 kilograms) of cocaine were found aboard a boat traveling south of the U.S. territory on Wednesday, according to U.S. Customs and Border Protection.

It is the latest multimillion-dollar drug seizure this year in waters surrounding Puerto Rico. In July, federal agents seized $4.6 million worth of cocaine west of the island.

Puerto Rico is considered a transit point for drugs being smuggled to the U.S. mainland and other countries.