Prime Minister Najib Razak heads to Perth Wednesday discuss the search for Flight MH370 which disappeared on March 8 with Australian PM Tony Abbot and the head of the new Joint Agency Coordination Center leading it from there. Before he left, Razak said the reasons for Malaysian Airlines fight’s disappearance en route from Kuala Lumpur to Beijing with 239 people aboardmay never be known. Malaysian police chief Khalid Abu Bakar said the criminal investigation could go on and on and in the end, “we still may never know” what happened. Police had cleared all the passengers in the key areas of the investigation including hijacking and sabotage