Australia is set to draw a line under the search for missing Malaysia Airlines Flight MH370, potentially leaving one of the world's greatest mysteries unsolved.
Federal Transport Minister Darren Chester will meet  Malaysian and Chinese officials this week to discuss the progress of the search and to make clear Australia is unlikely to support any extension of the current search zone.
There were suggestions the Malaysians and Chinese would push to widen the search zone, or extend the search time frame.
Australia would likely reject such a plan unless it was funded entirely by Malaysia or China.
Flight MH370 vanished with 239 people on board during a flight from Kuala Lumpur to Beijing on   March 8, 2014.
Perth became the centre of international efforts to find the  plane and experts drew up a massive 120,000sqkm search zone off the coast of WA.
Almost all of that area has now been covered by specially equipped ships using sonar to scan the seabed but there has been no sign of the Boeing 777.
Of the designated   area, less than 10,000sqkm is left to be covered by the search team. 
Pieces of debris almost certainly from the plane have washed up on Reunion Island and off the coast of Tanzania and parts have been brought to Australia for examination. 
The search was due to be completed by   August, but bad weather and technical problems caused delays, meaning the program will now likely be competed in   October.
Should authorities not find the plane and its black box flight recorder, the mystery of what happened will never be conclusively solved.
The underwater search for MH370 is expected to cost about $180 million, with Australia paying about $90 million.