French prosecutors have identified three more of the eight attackers who went on a rampage killing 129 people and injuring nearly 350 in and around Paris on Friday. The assailants, seven of whom were suicide bombers, carried out six attacks, and authorities suspect 20 more people across Europe to have helped them.

The Associated Press (AP) reportedly said Monday that French officials believe that a man named Abdelhamid Abaaoud to be the mastermind behind the attacks. The official reportedly added that he was connected to two more attacks that were thwarted -- one on a high-speed train headed toward Paris earlier this year, and another at a Paris area church. Seven people have so far been taken into custody.

One of the assailants was named as Samy Amimour, 28, who is believed to have been a part of the group of suicide bombers at the Bataclan theatre, BFMTV, a local news network reported. He was charged in a terrorism operation in 2012, and was placed under judicial supervision, AP reported, citing prosecutors. However, he went off the radar and was subject to an international arrest warrant. Three people from Amimour’s family have also been taken into custody by French police officials on Monday.

Ahmad Al Mohammad, 25, was reportedly identified as the bomber who blew himself up outside the national soccer stadium, and was found with a Syrian passport on his name. He was reportedly born in Syria's northwestern city of Idlib and prosecutors said that fingerprints from Mohammad match those of a person who passed through Greece in October.

A second suicide bomber, named Bilal Hadfi, reportedly blew himself up at another gate of the stadium, just minutes after Mohammad, Daily Mail reported. He is believed to have fought alongside the Islamic State group, which had claimed responsibility for the attacks.

Another suspect, Brussels-born Salah Abdeslam, 26, reportedly hired a black Volkswagen Polo that was used by the gunmen who attacked the Bataclan theatre and is believed to have helped with the logistics, according to the Daily Mail. There were conflicting reports about Abdeslam's whereabouts as some suggested he was detained in Brussels but police denied the arrest. Some reports suggest he fled to Spain.

One of Abdeslam’s brothers died during the attack and another was arrested in Belgium, PBS Newshour reported. Ismaël Omar Mostefai and Abbdulakbak B. were identified Sunday as as two of the eight attackers.