Satellite data that confirmed the missing Malaysia jetliner crashed in the Indian Ocean includes a final electronic signal that is still a mystery to investigators, Malaysia's transport minister said Tuesday.<br/> <br />(SOUNDBITE) HISHAMMUDDIN HUSSEIN, MALAYSIAN TRANSPORT MINISTER, SAYING:<br/> <br />"There is evidence of a partial handshake between the aircraft and the groundstation at 0019 UTC. At this time this transmission is not understood and is subject to further ongoing work."<br/> <br />Officials say this data means the search for the missing plane is being significantly narrowed to a remote area in southern Indian Ocean off Australia.<br/> <br />A fleet of Chinese ships and helicopters headed to the area Tuesday as bad weather in the region forced the suspension of the search for the day.<br/> <br />Officials say finding aircraft debris remains their top concern. But the CEO of Malaysia Airlines says at this point he believes all passengers on board the plane are dead.<br/> <br />(SOUNDBITE) AHMAD JAUHAR
