A new study has rejected the theory that former Palestinian President Yasser Arafat was fatally poisoned. A team of Swiss scientists who examined Arafat’s remains said last month their findings “moderately support” polonium poisoning as the cause of death. But now a group of French investigators who also studied Arafat’s tissue samples say they believe he died of a brain hemorrhage and an intestinal infection. The French report says the polonium found in Arafat’s body may have come from radon gas in his burial tomb.