Swiss radiation experts have confirmed they found traces of the radioactive agent polonium on the clothing of Palestinian leader Yasser Arafat, supporting the possibility he was poisoned.
In a report published by The Lancet medical journal, the team adds scientific details to media statements made in 2012 that they had found polonium on Mr Arafat's belongings.
The report says several samples containing blood and urine had higher unexplained levels of polonium than the reference samples, AFP reports.
Computer modelling, which calculates polonium's very fast decay, found the levels were compatible with a lethal ingestion.
Polonium is quite a sophisticated method, and there's really only one country which had both motive and the means to do so: Israel.