Mohamed Lahouaiej Bouhlel, a delivery man who killed 84 people with a heavy truck in Nice last week, prepared for months with the help of accomplices, Paris prosecutor Francosi Molins said Thursday.
French authorities were trying to determine on Friday whether a Tunisian who killed at least 84 people by plowing a truck into Bastille Day crowds had acted alone or with accomplices, but said the attack bore the hallmarks of Islamist militants.