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The international superstar played for the Cardiff Blues towards the end of his career.
His former club were among those in the rugby world taking to Twitter to share memories including a number of Wales stars who credited him with inspiring them to take up rugby.
Jonah Lomu was the first reason I wanted to play rugby. Inspiration and true legend. Very sad news. Thoughts with his family.— Sam Warburton (@samwarburton_) November 18, 2015
Can't believe the news about @JONAHTALILOMU this morning he had a massive influence on me starting rugby as a kid. Thoughts go to his family— Josh Navidi (@Jnavidi) November 18, 2015
Very sad news this. #RIPJonahLomu. A great player but more importantly a great man. Deepest Sympathy to his family.— Nigel Owens (@Nigelrefowens) November 18, 2015
RIP Jonah you were a true legend and a gentleman.You changed the game of rugby and will be sorely missed. My thoughts are with your family.— Jonathan Davies (@JiffyRugby) November 18, 2015