The French Police have issued a photograph of a French national allegedly connected to the Islamist group that killed 129 people in Paris on Friday.
Brussels-born Salah Abdeslam, the key suspect named by the police, reportedly rented the Volkswagen Polo believed to have been used by the attackers.
The officials revealed him to be one of the three Belgium-based brothers linked to Friday's attacks.
The other two were Brahim Abdeslam, who blew himself up outside a bar near the Bataclan concert hall on Friday, and Mohammed Abdeslam, who was arrested in Molenbeek, Belgium.
The remaining five gunmen and suicide bombers were killed during assaults in the country.
On Friday, a series of coordinated terrorist attacks consisting of mass shootings, suicide bombings, and hostage-taking occurred at various locations in Paris.
These include the Bataclan concert venue, Le Carillon bar, restaurants La Belle Equipe, Le Petit Cambodge and La Casa Nostra, and the Stade de France.
The Belgian police have reportedly arrested seven suspects involved in the Paris attack.
Calling the attack an 'act of war', French President Francois Hollande said the attacks were 'organised and planned from outside'.
Meanwhile, France has launched their biggest raids in Syria, targeting the Islamic State's monopoly in Raqqa on Sunday.
The move follows the Islamic State of Iraq and the Levant (ISIL) claiming responsibility for the attacks on 14 November.
Since September 2014, France's military has been involved in airstrikes in Iraq and Syria under Operation Chammal. The country struck targets in Syria for the first time in October.