The death of the late Palestinian leader Yasser Arafat is now the subject of a murder investigation.br  br It follows an Al Jazeera documentary which revealed high levels of Polonium-210 on his clothing, the same radioactive element that killed former Russian spy, Alexander Litvinenko.br  br Arafat died in a military hospital near Paris in 2004, aged 75.br  br French prosecutors opened the investigation after a complaint lodged by Arafat's widow Suha.br  br Al Jazeera's Andrew Simmons reports from Paris.