Updated

A French journalist held hostage for months by extremists in Syria says one of his abductors was a Frenchman suspected of killing four people at the Brussels Jewish Museum earlier this year.

French magazine Le Point on Saturday quotes its reporter Nicolas Henin as saying he was tortured by Mehdi Nemmouche, a Frenchman who had spent time with extremists in Syria.

Henin was held for a time with American journalists James Foley and Steven Sotloff, both beheaded by extremists from the Islamic State group in recent weeks. He was released in April with other French journalists.

Nemmouche is in custody. The Brussels killing in May crystallized fears of European governments that citizens who join radical fighters in Syria could return to stage attacks at home.