The attacker who drove a truck through Bourbon Street in New Orleans used Meta smart glasses to scout the scene ahead of New Year’s Day, according to an announcement from the FBI on Sunday.

The man who rammed a pickup truck into revelers on New Orleans’ Bourbon Street on New Year’s Day wore Meta smart glasses when planning and conducting the attack, the FBI said Sunday. While there’s no indication that the glasses were essential to the assault,

The FBI says the New Orleans truck attacker who killed 14 people had previously scouted the French Quarter and recorded video with his Meta smart glasses.