(CNN) The man who used a 20-ton truck to plow down hundreds of people in Nice this week, killing 84, somehow became rapidly radicalized and hadn't shown up on any anti-terrorist intelligence radar, French Interior Minister Bernard Cazeneuve said Saturday. The minister said Mohamed Lahouaiej Bouhlel, 31, had had no record of making militant statements and was not known to the intelligence services. It seems he became radicalized very quickly," Cazeneuve said, without offering specifics. "This is a new type of attack," Cazeneuve said. "We are now confronted with individuals that are sensitive to the message of ISIS and are committed to extremely violent actions without necessarily being trained by them."ISIS says one of its "soldiers" carried out attack in France"Mum, there are dead everywhere," one victim says in a frantic phone call
The source said investigators made the link after cross-referencing case files after the attack in _.