Bouhlel scouted out the Promenade des Anglair twice before the attack — on July 12 and 13, the prosecutor’s office told NBC News. It said surveillance footage showed him in the truck he used to carry out the carnage.

Officials have said he wasn’t known to intelligence services. Interior Minister Bernard Cazeneuve told reporters Saturday that Bouhlel “appears to have become radicalized very quickly.”

A close friend of Bouhlel’s ex-wife, however, said he was not a radical Islamist but rather a violent man with nothing left to lose after his marriage fell apart.