The U.S. Coast Guard says it has rescued 16 Cuban migrants after their boat began to sink in the treacherous sea passage between Puerto Rico and the Dominican Republic.

Officials say the migrants were repatriated Friday to the Dominican Republic. Two Dominicans have been detained on suspicion of human smuggling.

The Coast Guard says the migrants' boat was found late Wednesday in the Mona Passage. There were 15 men and three women aboard.