Yasser Arafat poisoning claims to be investigated
11 July 2012 Last updated at 04:10 BST
Palestinian officials are calling for an international inquiry into former leader Yasser Arafat's death, over renewed claims that he was poisoned.
Swiss scientists told an al-Jazeera TV documentary that the radioactive material polonium-210 was on belongings given to his widow after he died in 2004.
Arafat's medical records say he had a stroke resulting from a blood disorder.
Wendy Urquhart reports.