Olivier Corel is the latest person wanted by French police investigating the deadly Paris attacks.
Known as the “white emir”, the 69-year-old Imam is suspected of being the mentor of Mohamed Merah, who killed seven people in the southwestern city of Toulouse in 2012.
Corel is also said to be close to Fabien Clain, a French Muslim convert, who detectives have identified as a voice claiming responsibility for Islamic State.
The hunt, meanwhile, continues for Brussels barkeeper Salah Abdeslam, who returned to the city from Paris hours after the attacks.
Police are now examining what appeared to be an explosive belt found on Monday night in a rubbish bin in the town of Montrouge, south of Paris.
Sources say it is too soon to tell if the belt had been in contact with Abdeslam, whose elder brother blew himself up during the gun and suicide bomb attacks.