Malaysian officials say terrorism is looking increasingly "unlikely" as they continue to investigate the disappearance of flight MH370.
Police say one of the passengers who boarded the flight on a stolen passport has been identified as an Iranian asylum seeker with no links to terrorist groups.
The airliner was en route from Kuala Lumpur to Beijing when it went missing on Saturday, after taking off with 239 on board.
Search teams are now focusing their efforts on Malaysia's west coast.
The Guardian's South East Asia Correspondent Kate Hodal says that decision is based on no specific intelligence.