A man on a boat at a Havana marina told CNN's Patrick Oppmann he is Josh Hakken, the U.S. man accused of kidnapping his sons and sailing them to Cuba.
He declined to answer questions, and Cuban security asked a CNN reporter to leave.
The man, who fit Hakken's description, was with a woman who fits the description of his wife. Both were aboard a blue sailboat named "Salty." The CNN reporter also saw one child on the boat.