a senior security source, said the plan called for Israeli agents to assassinate Meshal while he attended a conference of Islamic groups in Turkey. "The plan raised serious concern in Jerusalem over the fate of diplomatic and security ties with the neighbouring Moslem state," the report said. Israeli Mossad agents tried to kill Meshal near his office in Amman last month in a bungled operation that strained ties with Jordan, the Jewish state`s friendliest Arab ally. The agents were arrested after poisoning Meshal with an unknown substance. To secure their release and mollify Jordan`s King Hussein, Israeli Prime Minister Benjamin Netanyahu provided the antidote that saved Meshal and freed Palestinian and Jordanian prisoners including Hamas founder Sheikh Ahmed Yassin.