French officials have identified the third gunman involved in the horrific attack at the Nov. 13 Eagles of Death Metal concert at Le Bataclan in Paris as Foued Mohamed-Aggad.

Mohamed-Aggad was a French native who left the country to go to Syria in 2013 where he trained with Islamic State extremists. His mother was able to confirm his identity with a DNA sample, Billboard reports.

Mohammed-Aggad and two other gunmen equipped with suicide vests and automatic weapons opened fire on the Paris theater during an Eagles of Death Metal show last month, ultimately killing 89 people in attendance. The other two attackers have been identified as Frenchmen Omar Ismali Mostefai and Samy Amimour. All three gunmen were killed in the attack.

“What is important is that the investigation is progressing, that the accomplices are found out, that arrests happen,” French Prime Minister Manuel Valls said Wednesday (Dec. 9).

The Bataclan attack was part of a series of coordinated attacks across the French capital on Nov. 13, which have resulted in a death toll of 130.