(CNN) The search for flight MH370 will end next week after more than four years, at a cost of tens of millions of dollars spent and with no clue of what happened to the ill-fated plane.

Malaysia's cabinet agreed to a request by the US company operating the search, Ocean Infinity, to extend the hunt until May 29. Malaysian Minister of Transport Anthony Loke Siew Fook told reporters in Kuala Lumpur on Wednesday there would be no more extensions after that.

The Malaysian Airlines flight disappeared in 2014 carrying 239 people from Kuala Lumpur to Beijing, in what has become one of the world's biggest aviation mysteries.

The Australian HMAS Success during the search for MH370.

The initial search, carried out by Malaysia, China, and Australia, was called off in January last year after failing to find any trace of the plane within a 710,000-plus square kilometer area of the Indian Ocean.

The search is estimated to have cost some 200 million Australian dollars ($151 million), according to Australia's minister for infrastructure and transport, Darren Chester . Most of the funds were provided by the Malaysian government. It has been the most expensive search for a missing plane in history.

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