Acting Palestinian Authority chief Mahmoud Abbas has called for an international investigation to determine who was behind the death of former PLO leader Yasser Arafat. Abbas\'s remarks came days after Palestinian investigators accepted reports issued by Swiss scientists, who said they found high levels of the radioactive element polonium in the remains of Arafat\'s body. Palestinian investigators say Israel is the prime suspect in the case. However, Tel Aviv has denied the allegations. Arafat died in November 2004, a month after going into a coma following symptoms of abdominal pains, diarrhea, and vomiting. Show Less >>