CNN 's Fred Pleitgen and Saad Abedine contributed to this report . NEW : Arafat 's widow says she does n't want to know . Former PLO leader , Arafat 's body is exhumed . Israel says it had nothing to do with his death . Palestinian officials want to know if Arafat was poisoned with radioactive substances .
NEW : Arafat 's widow says she does n't want to know . Former PLO leader , Arafat 's body is exhumed . Israel says it had nothing to do with his death . Palestinian officials want to know if Arafat was poisoned with radioactive substances .