French authorities filed terror charges on Saturday against two suspected members of the same Islamic State cell that massacred 130 people in Paris last November, a judicial source said.
Algerian Adel Haddadi, 29 and Pakistani, Mohamad Usman Gani, 35 were arrested at a migrant centre.
Investigators believe they travelled with the Paris attackers to Greece and were possible co-conspirators.
The attacks in Paris on 13 November last year were the worst in French history.
Gunmen and suicide bombers hit Bataclan concert hall, the national football stadium, restaurants and bars, almost simultaneously, leaving 130 people dead and hundreds wounded.