French journalist Nicolas Henin - seen here walking out first in line - made news in April when he and several other journalists were freed from captivity in Syria.

Now he's making news once again.

In an article published Saturday in the news magazine Le Point, Henin identified one of his captors as Mehdi Nemmouche, who is accused of killing four people at a Jewish museum in Brussels in May.

Nemmouche was born in France and is of Algerian descent.

In the article, Henin says Nemmouche was one of a small number of French fighters affiliated with the forerunner of Islamic State who supervised some 50 prisoners in an Aleppo jail.

Nemmouche was later arrested in Marseilles and extradited to Brussels, where he is awaiting trial for the killings.