A Florida couple suspected of kidnapping their two sons from the woman's parents are in Cuba, authorities said Monday.

The Hillsborough County Sheriff's Office received information that the Hakken family had arrived on the island nation, according to a news release. Investigators say they're working with the FBI and the U.S. State Department to verify their reports.

It wasn't immediately clear what, if anything, authorities could do to retrieve the family from Cuba.

A State Department official said the department is aware of the case and is in contact with local authorities. The official said a high priority is the welfare of U.S. citizens overseas, especially children "who are our most vulnerable citizens."

"The Department works with parents and foreign governments to resolve these difficult cases," the official said....