Hanan Ashrawi, who was close to Yasser Arafat and saw him shortly before he left for Paris has said that his illness looked "unnatural."
She said: "I talked to the medical teams that were examining him, they told me that unquestionably that he was poisoned, but they couldn't identify the poison."
Ms Ashrawi said that "we have to pursue now the people that are responsible justice has to be done."
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A collection on cricketers have given their backing to Sean Abbott, the man who bowled the ball that struck Phil Hughes.
Batsman Phil Hughes died after a "catastrophic" head injury caused by a cricket ball splitting a major artery at the base of his neck.