According to a leaked report, French scientists examining the death of Palestinian Authority president Yasser Arafat say he probably died of natural causes.
The team has reportedly concluded that Mr. Arafat died from a "generalized infection," BBC News reports.
A Swiss forensic reportsaid Arafat's exhumed body contained "unexpectedly high levels" of polonium 210.
Palestinian investigators said the report proved that Arafat was assassinated, and that Israel was the only suspect arguing that Israel had the "means and motive" to kill him. Israel has always denied these claims.
The report said the levels of polonium found on Arafat's body were "18 to 36 times" higher than normal, but the scientists said their findings did not prove the theory that he was poisoned.
They stressed the fact that they could not reach a definitive conclusion because of how much time has lapsed since his death, the limited samples available and the confused "chain of custody" of some of the specimens.
Yasser Arafat died in 2004 in a French military hospital in Paris less than a month after becoming ill in the West Bank. His official medical records say he died from a stroke caused by a blood disorder. At the time, French doctors were not able to determine the cause of the disorder.
The leaked report by French scientists says "The analysis cannot lead us to affirm that Arafat died of polonium 210 poisoning,” according to Al Jazeera.
French investigators said they did find traces of polonium 210, but concluded that Arafat died of natural causes.