The WSJ reports the plane may have flown for four hours after its last known contact . A U.S. official told CNN that it is unclear whether the aircraft was in Iranian airspace or if there were any other countries involved. Malaysian officials say they are analyzing radar data from after the plane lost contact . They are trying to determine if a blip on the radar heading west was in fact the plane .
The WSJ reports the plane may have flown for four hours after its last known contact . A multinational search over a 35,000-square-mile area is under way at sea . Malaysian officials say they are analyzing radar data from after the plane lost contact . They are trying to determine if a blip on the radar heading west was in fact the plane .