China demanded yesterday that Malaysia turn over the satellite data used to conclude that a Malaysia Airlines jetliner had crashed in the southern Indian Ocean, killing 239.

Malaysia says it has narrowed the search area for a downed airliner by 80% in the southern Indian Ocean, while Australia said improved weather would allow the hunt for possible debris from the plane to resume.

Furious that Malaysia has declared their loved ones lost in a plane crash without physical evidence, Chinese relatives of the missing marched to the Malaysian Embassy in Beijing today.