The monster behind the wheel of a box truck that plowed into Bastille Day revelers in Nice late Thursday - killing at least 84 - was a creepy petty criminal prone to violence, but not seen by police or neighbors as a religious fanatic, according to French reports.

Mohamed Lahouaiej Bouhlel, 31, once drove a delivery truck for a living, but he rented the 19-ton Renault that he turned into a killing machine on the seaside promenade where French citizens and tourists had just watched a fireworks show. Scores more were injured by what authorities called an act of terror that only ended when police shot and killed Bouhlel.

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