The FBI has released a new photo of New Orleans terrorist attacker Shamsud-Din Jabbar as they continue to investigate what motivated his New Year's attack on Bourbon Street.

At least five people are now known to have been killed in the vehicle-ramming attack on a Christmas market in the German city of Magdeburg on Friday.

Germany's interior minister said the man charged in the deadly attack at a Christmas market in Magdeburg had "striking signs of a pathological psyche."

The man who is suspected of committing the New Years Day vehicle-ramming attack in New Orleans searched online for information about the Christmas market car-ramming attack in Germany, just hours before carrying out his own attack on Bourbon Street, according to the FBI.

Shamsud-Din Jabbar, the driver behind the Bourbon Street attack on New Year’s, researched New Orleans and the deadly Christmas market attack in Germany in the hours and weeks before the attack, the FBI said in an update Tuesday.

At least five people are now known to have been killed in the vehicle-ramming attack on a Christmas market in the German city of Magdeburg on Friday.

Abdulmohsen, a 50-year-old doctor from Saudi Arabia, had expressed anti-Islamic views and described himself as a Saudi dissident, an official said.

The FBI released an update on their investigation into the possible motive behind the New Year’s Bourbon Street attack. On Tuesday, the FBI released new details about the attacker, identified as Shamsud Di Jabbar,