French prosecutors have opened a murder inquiry into the death of Palestinian leader Yasser Arafat in 2004.
His family launched a case last month over claims that he was poisoned with polonium-210, a radioactive element.
Swiss scientists hired by a documentary crew say they found traces of polonium on some of Arafat's belongings.
The medical records of Arafat, who died at a military hospital near Paris in 2004, said he had a stroke resulting from a blood disorder.
However, many Palestinians continue to believe he was poisoned by Israel because he was an obstacle to peace. Israel has denied any involvement.
