A US couple who "wanted to see the world" by yacht were apparently thrown into the sea in Grenada, police say. Kathy Brandel and Ralph Hendry have been missing since the boat was taken on February 19 by three inmates who escaped from a prison on the Caribbean island.

Grenada police on Monday offered their "condolences" to the loved ones of two American sailors "discarded" at sea by prisoners. Authorities still cling to a "low probability" that they American citizens may be alive.