The four-year hunt for Malaysia Airlines flight MH370 has ended with the latest, privately funded search coming to a close.

US-based Ocean Infinity had been using a deep-sea vessel to survey a vast area of the southern Indian Ocean.

But it found nothing and Malaysia's government says it has no plans to begin any new searches.

The plane disappeared on 8 March 2014 while flying from Kuala Lumpur to Beijing with 239 people on board.

Official search efforts ended last year and there are still fierce debates about what happened to the flight.

Grace Nathan, whose mother was on MH370, said she was opposed to ending the hunt.

"People might think: 'Why are these people still harping on about this, it's been four years'. It's important for people to remember that MH370 is not history," she told the Guardian newspaper.

Ocean Infinity surveyed an area of about 80,000 sq km (30,888 sq miles), using a fleet of up to eight mini-submarines.

The deteriorating weather in the area as winter approaches now makes operating there impossible for the next few months.

The company had agreed to undertake the search unpaid but would have received a reward of up to $70m if it had found the wreckage.

Investigators have very limited information about the plane's last hours.

Experts still cannot come to a definitive conclusion as to whether MH370 remained under the pilot's command, or crashed out of control into the sea.

Each of these two scenarios suggests different search areas.

The reasons why the pilot took the airliner off its scheduled flight path and down into a remote stretch of ocean are still unknown, as most of the communication equipment on board had been switched off.

Earlier this month, Australian investigators rejected suggestions that the plane was deliberately brought down by the pilot.

Source: BBC Online

BDST: 1351 HRS, MAY 29, 2018
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