US President Barack Obama on Sunday called for open sharing of information about Malaysia's efforts to find a missing airplane that disappeared with 239 people on board March 8, dpa reported. "There should be full transparency in terms of what we know and what we don't know, how the process is proceeding," he said after meeting with Prime Minsiter Najib Razak in Kuala Lumpur. Obama said the United States remains committed in helping find the missing Malaysian Airlines plane.