Obi-Wan Kenobi Is Dead, Vader Says - Galactic Empire Times - http://www.galacticempiretimes.com/2011...
"In a late-night appearance in the East Room of the Imperial Palace, Lord Vader declared that “justice has been done” as he disclosed that agents of the Imperial Army and stormtroopers of the 501st Legion had finally cornered Kenobi, one of the leaders of the Jedi rebellion, who had eluded the Empire for nearly two decades. Imperial officials said Kenobi resisted and was cut down by Lord Vader's own lightsaber. He was later dumped out of an airlock." - Victor Ryden 美久太阿