Cambodian residents of a community light candles as they pray for the missing Malaysia Airlines flight MH370 at their village in Phnom Penh on March 17, 2014. An investigation into the pilots of missing Malaysia Airlines flight 370 intensified on March 17 after officials confirmed that the last words spoken from the cockpit came after a key signalling system was manually disabled.  AFP PHOTO/ TANG CHHIN SOTHY        (Photo credit should read TANG CHHIN SOTHY/AFP/Getty Images)
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