Cuba’s coastguard shot dead four people and injured six others travelling in a U.S.-registered speedboat in an exchange of fire off the Cuban coast on Wednesday, the interior ministry in Havana said. The “illegal” Florida-registered boat was detected one nautical mile from Falcones Cay in Villa Clara province, the ministry said in a brief statement. As a coastguard vessel approached to identify the boat “shots were fired from the boat,” injuring the commander of the Cuban vessel, the ministry added. “As a result of the clash, at the time of this report, on the foreign side, four aggressors were killed...