Mr al Hilli had begun proceedings in an attempt to prove his father's will had been forged, reports say.
Several versions of the will, worth £4 million, were found in the family's caravan near Annecy in south-eastern France, sources said.
The British businessman Saad al Hilli, who was killed with members of his family in the French Alps last month, had filed a lawsuit over an alleged forged will, it was reported yesterday.
Mr al Hilli had begun proceedings in an attempt to prove his father's will had been forged, reports say.
Several versions of the will, worth £4 million, were found in the family's caravan near Annecy in south-eastern France, sources said.
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