Two more people were arrested in Nice, France Saturday in connection with the truck attack that killed at least 84 people and injured dozens more on Thursday.
The truck's driver was identified as Mohamed Lahouaiej Bouhlel, but police are unsure of whether he acted alone, USA Today reports.
ISIS claimed on Saturday that the Tunisian man involved in the Nice attack, Mohamed Lahouaiej Bouhlel, was a "soldier" of the group. The group didn't name him but claimed the attacker was affiliated.
Despite ISIS claiming responsibility for the attack, those who knew Bouhlel said he showed no signs of radicalization and was not devout in his faith. French Prime Minister Manuel Vails said Bouhlel "radicalized very quickly."