( CNN ) -- At least three people died and seven others were rescued Thursday after their boat capsized off the coast of southeastern Florida , the U.S. Coast Guard said . And that toll -- of the dead and rescued -- may rise : The Coast Guard believes that two more people may still be trapped or in the Atlantic Ocean , spurring an intense search for them . A Dutch naval vessel , the Zeeland , heading toward Key West , Florida , first alerted the U.S. Coast Guard at noon about the ship . Specifically , the Coast Guard said , the Dutch sailors reported seeing `` a capsized 24-foot center console vessel with seven suspected migrants atop the hull . '' The Dutch sailors rescued those individuals and retrieved three bodies `` from within the hull , '' according to the Coast Guard . The Coast Guard has since sent the Cutter Richard Etheridge , a 154-foot ship based in Miami , to search for the two missing people . In addition , a C-130 airplane out of Clearwater , Florida , has been dispatched to the scene . Upon arrival , they took over the operation from the Dutch navy and will transport those rescued to the Florida mainland , Coast Guard Petty Officer Sabrina Laberdesque told CNN . CNN first learned of the incident via that agency 's Twitter account . The Zeeland left the Netherlands 12 days ago en route to the southern tip of Florida , said Lt. Maartje Van Der Maas , a spokeswoman for the Royal Netherlands Navy in the Caribbean . The Dutch sailors will pick up a Coast Guard helicopter in Key West to use over the next four months in drug interdiction operations in the Caribbean . After handing over the rescued people Thursday , the Zeeland continued onto Key West , according to Van Der Maas .
NEW : Spokeswoman : The Dutch ship was going to pick up a U.S. Coast Guard helicopter . NEW : The Dutch sailors gave those rescued to U.S. Coast Guard , continued to Key West . Those rescued are `` suspected migrants , '' according to the U.S. Coast Guard . " Comment: I'm not sure if this is true or not