The mystery of missing Malaysia Airlines flight MH370 has captured world-wide attention.

Well-wishers have been sending messages of hope for the 239 passengers and crew who went missing with it.

On Wednesday the search area was widened again into the Andaman and South China Seas.

The international search, now five days old, has yielded no clues about the plane's fate.

But Malaysia Airlines' commercial director says there is no indication the crew was at fault.

(SOUNDBITE)(English) HUGH DUNLEAVY, COMMERCIAL DIRECTOR OF MALAYSIA AIRLINES SAYING:

"We have no reason to believe that there was anything, any actions, internally by the crew that caused the disappearance of this aircraft."

More than ten nations are now involved in the search.

Officials from the U.S navy, which has two ships taking part, say time is critical.

(SOUNDBITE)(English) COMMANDER WILLIAM MARKS, PUBLIC AFFAIRS OFFICER, U.S SEVENTH FLEET, SAYING:

"A person can s