Malaysian authorities were expected to release a preliminary report on Flight MH370 on Thursday, two months into the search that has not yielded a single piece of debris related to the missing plane.
Planes, ships and investigators from 26 nations have been scouring the southern Indian Ocean for the Boeing 777 that vanished on March 8 as it flew from Kuala Lumpur to Beijing with 239 people on board.
However, most of the ships and aircraft have been cut loose by Australia’s Joint Agency Coordination Center, which is leading the hunt. Two U.S. patrol planes have also been pulled.
Bluefin-21, the U.S. Navy's robot submarine that has carried most of the recent load of the search, will continue to look for evidence of the flight as the focus shifts underwater.