21.   But French authorities doubt the claim, saying a search has failed to turn them up.

22.   He doubted claims by a rescue worker that the belt was intact when emergency crews arrived at the car.

23.   Ken Conboy, an analyst with Control Risks Group, a London-based security consultancy, also doubted the claims.

24.   No body has been found, and the Phillippine government initially doubted the claim.

25.   The Pentagon also has doubted the claim.

26.   U.S. officials doubt this claim.

27.   US doubts Taliban claim that bin Laden is missing.

28.   The navy officials, however, said they doubted claims that the vessel was from the Venezuelan navy.