In short:
Shamsud-Din Jabbar visited New Orleans twice and recorded a video of the French Quarter using Meta glasses, according to the FBI.
Jabbar crashed his car into crowds in New Orleans on New Years Day, killing 14 people and injuring at least 30 others.
Authorities say Jabbar travelled to Egypt and Canada before the attack.
The man who drove a truck into crowds in New Orleans had previously visited the city twice and recorded video of the French Quarter with hands-free glasses, according to an FBI official.
Shamsud-Din Jabbar killed 14 people and injured at least 30 others when he rammed into crowds on New Year's Day.
The earlier reported death toll of 15 included Jabbar, who was fatally shot at the scene on Bourbon Street.
Surveillance footage shows Shamsud-Din Jabbar in New Orleans an hour before the attack. The FBI says he recorded video of the French Quarter in October and November using Meta glasses. (AP: FBI)
FBI Deputy Assistant Director Christopher Raia said Jabbar travelled to Egypt and Canada, but it was not yet clear whether those trips were connected to the attack.
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Photo shows A young man with blond hair sitting at an outside pub bench, smiling at the camera.
FBI special agent in charge of the New Orleans Field Office Lyonel Myrthil added that the suspect travelled to Cairo in the summer of 2023 and then to Canada a few days later.
“Our agents are getting answers to where he went, who he went with and how those trips may or may not tie into his actions here," Mr Myrthil said.
Jabbar had also travelled to New Orleans in October and November, the FBI said.
Mr Myrthil said the video shows the suspect riding through the French Quarter on a bicycle wearing "Meta glasses" that are capable of recording or livestreaming.
The FBI says Jabbar wore Meta glasses to record the French Quarter before the attack. (Supplied: FBI)
President Joe Biden planned to travel to New Orleans with first lady Jill Biden on Monday to "grieve with the families and community members impacted by the tragic attack".
Jabbar proclaimed his support for the Islamic State militant group in online videos posted hours before he struck.
The attack was the deadliest IS-inspired assault on US soil in years.
AP/Reuters