Paris Attacks: Suspected Mastermind of Massacre Identified as Abdelhamid Abaaoud

French officials have identified the man they believe to be the mastermind of the Paris attacks as Belgian national Abdelhamid Abaaoud.

Abaaoud also uses the name Abu Omar al Baljiki, is of Moroccan descent and is currently located in Syria, authorities say.

Abaaoud was connected to an attack on a train bound for Paris in August, when three American nationals and a British national prevented a gunman opening fire, and another attack on a church, Sky News reported.

He had links to two suspects from the Islamic State militant group (ISIS) killed by Belgian security forces in a counter-terror operation in the town of Verviers in January. According to France's RTL Radio, Abaaoud is "one of the most active ISIS executioners" in Syria.

At least seven people have been arrested in Belgium in connection with the Paris attacks that left at least 129 people dead and hundreds wounded. Belgian police have reportedly arrested a suspected eighth attacker, identified as Salah Abdeslam, RTL reported, according to Reuters.