WASHINGTON (AP) — U.S. authorities say a U.S. Customs and Border Protection agent and a suspected smuggler died during a shootout Thursday morning off the Puerto Rico coast. Two other U.S. officers were injured. CBP spokesman Jeffrey Quiñones says Air and Marine Operations agents were on routine patrol when the shots were fired off the coast from Cabo Rojo, a major drug smuggling corridor for cocaine coming out of South America known as the Mona Passage. It lies between Puerto Rico’s western coastline and the Dominican Republic. CBP says one of two suspected smugglers died. The FBI is leading the investigation.