Belgian Abdelhamid Abaaoud, 27, is believed to have links to foiled attacks on a Paris-bound high-speed train earlier this year and a church, according to reports.
Abaaoud, who also uses the name Abu Omar al Baljiki, is believed to be in Syria currently. He is one of the world’s most wanted war criminals.
He is believed to have recruited his own 13-year-old brother Younes, ISIS’ youngest fighter.
He is from the troubled Brussels district of Molenbeek – where a number of jihadi fanatics is believed to have been sourced.
Two other suicide bombers were also named after they blew themselves up in Friday’s terror attacks in Paris.
Samy Amimour, 28, blew himself up inside the Bataclan concert venue on Friday night.
The jihadi, from Drancy in northeast Paris, had been charged in a terrorism probe in 2012 – but later dropped off the radar.
Three people in Amimour’s family have been in custody since early on Monday morning. The news comes as French cops stormed 168 houses in pre-dawn anti-terror raids across the country.
Police have now placed 104 people under house arrest, French Interior Minister Bernard Cazenueve said.