RAMALLAH, West Bank — Swiss scientists have found evidence suggesting that Yasser Arafat may have been poisoned, adding new fuel to long-standing allegations about the Palestinian leader’s death, a TV station reported today.

Al-Jazeera published what it said was a long-awaited 108-page report by a team of Swiss experts who tested Arafat’s remains. The scientists wrote that “the results moderately support the proposition that the death was the consequence of poisoning with polonium-210,” according to the Pan-Arab satellite channel.

Senior Palestinian officials repeatedly have alleged that Arafat was poisoned by Israel. The Israelis denied the allegations.

Raanan Gissin, a former Israeli government spokesman, reiterated Wednesday that Israel had no role.

“It was a government decision not to touch Arafat at all,” he said, adding that “if anyone poisoned him, it could have been someone from his close circle.”

Suha Arafat, the Palestinian leader’s widow, said she was shocked and saddened by the report’s findings.

In his final days “he was so ill, losing everything, his immunity. He was shrinking day by day,” she told Al-Jazeera.

She said the family had no autopsy at the time and wanted him buried quickly according to Muslim tradition.

A relative of Arafat also confirmed the report was authentic.

Arafat died at a French hospital in 2004, but the cause of death has never been determined.