The results of the analysis of the remains of late Palestinian leader Yasser Arafat are consistent with the idea that he was poisoned with radioactive polonium, the director of Switzerland's Institute of Radiation Physics said here Thursday.

François Bochud explained the conclusions at a press conference held along with Patrice Mangin, head of Lausanne University Hospital's forensics center.

After a complex scientific explanation and when a reporter asked him to state his conclusions in clear and simple terms, Bochud responded: "Our results reasonably support the poisoning theory."

"Can we exclude polonium as cause of death? The response is clearly 'no,'" Bochud said. "Was polonium the cause of the death for certain? The answer is no."

Arafat fell ill in October 2004 inside his compound on the West Bank, then under siege by the Israeli military. The 75-year-old Palestinian leader died a month later at a French military hospital.

"You don't accidentally or voluntarily absorb a source of polonium. It's not something that appears in the environment like that," Mangin said.

"An accidental cause is practically excluded," Mangin told Efe.

During the press conference the experts also explained that just a few micrograms of polonium are lethal and that it can be easily administered in food or beverages.

Arafat's body was exhumed nine months ago at the behest of his widow, Suha Arafat. EFE