More resources are being thrown into the hunt for Malaysia Airlines Flight 370, though the search chief warns that the plane may never be found. Britain has sent its HMS Tireless submarine to help search the Indian Ocean for the missing Boeing 777 and its black boxes, reports the BBC. The private jet of Hobbit director Peter Jackson, meanwhile, is assisting the search from the air, reports Radio New Zealand. A spokesman for the director confirmed that his $80 million Gulfstream G650 is being used in the search. Authorities earlier said that a civilian aircraft was being used as a communications relay for military aircraft.
As the search continued, Malaysia's police chief warned that the investigation "may go on and on" without ever finding the true cause of the plane's disappearance, reports the Guardian. He said the investigation is focusing on the cabin crew and pilots after clearing all 227 passengers of possible involvement in hijacking or sabotage, Reuters reports. "You cannot hurry us. We have to clear every little thing," he said, explaining that investigators are still probing details including the plane's cargo and even the food served on board. (Read more Malaysia Airlines stories.)