RAMALLAH, West Bank — Palestinian President Mahmoud Abbas has given his permission for the exhumation of the remains of his predecessor, Yasser Arafat, a top aide said Monday, days after a Swiss institute reported finding elevated traces of a radioactive substance on the late leader's belongings.

The findings by Switzerland's Institute of Radiation Physics were inconclusive, but revived speculation that Arafat was poisoned.

The legendary Palestinian leader died Nov. 11, 2004 in a French military hospital, a month after falling violently ill at his government compound in the West Bank town of Ramallah.