"Truth and transparency are important in democratic society. They will be established, because the French are demanding it, because the families of the killed insist on it. But they should be established by the justice, and not by anyone else. We should allow justice to work in conditions of full independence, there can not be any debate on the issue," Hollande said.
He added that he supports both Prime Minister Manuel Valls and Interior Minister Bernard Cazeneuve, who refuted the allegations and called on their opponents to be responsible and dignified.
At least 84 people, including children, were killed and hundreds of others were injured during the truck attack. An investigation into the tragedy found that the person behind the attack was 31-year-old resident of Nice of Tunisian origin Mohamed Lahouaiej Bouhlel.