TUNIS, Tunisia -- A jailed Tunisian man is "strongly suspected" of being involved in the attack on the U.S. consulate in Benghazi that killed four Americans, a top Tunisian official has confirmed.Interior Minister Ali Larayedh said were "major assumptions" that Ali Harzi, who was arrested and repatriated from Turkey, had a link to the attack in the Libyan city that killed U.S.