Families of MH370 victims have emerged from a briefing on a final report on the 2014 loss expressing disappointment about the lack of closure. The Guardian reported  family members looked distraught and were sobbing after receiving the report. They accused the investigators of getting some of the information wrong. ABC reporter David Lispon tweeted: “Families weep after receiving final report on MH370. There’s no conclusion”. Unlike the analysis used to determine the search areas, the Annex 13 investigation’s remit included looking into possible causes of the accident. The investigation  involved representatives from seven international air crash investigation organizations from Australia, China, France, Indonesia, Singapore, the UK and the US. The fate of MH370 looks set to remain one of aviation’s greatest unsolved mysteries after contact was lost during a flight from Kuala Lumpur to Beijing on March 8, 2014. The aircraft’s transponder fell silent shortly after the final transmission, “Goodnight, Malaysian three seven zero”, rendering it invisible except to primary radar. The aircraft’s Automated Aircraft Communication and Reporting System (ACARS) had made its last transmission about 13 minutes earlier. Experts say the most likely explanation is that one of the pilots, probably  Captain  Zaharie Ahmad Shah,  disabled communications as part of a plot to hijack the plane. They say this is supported by the way the aircraft was seen to be making a series of turns by civilian and military radar before it disappeared to the north-east of Banda Aceh in Indonesia and then turned south. A major difference in theories held by the official search team and some pilots is whether the aircraft was under control at the time it hit the water. However,  the lack of definitive information about the aircraft’s final flight path, where it ended up and how it crashed makes it difficult to draw definitive conclusions.