Swiss scientists confirm polonium in Yasser Arafat remains
7 November 2013 Last updated at 16:28 GMT
Swiss scientists have confirmed that tests show that the late Palestinian leader Yasser Arafat had high levels of radioactive polonium in his body.
However, they could not say whether polonium poisoning had certainly caused his death in 2004.
Their report concluded that Yasser Arafat's remains showed levels of polonium 18 times higher than normal.
Nick Childs reports.