French intelligence has growing list of suspected radicals

France's domestic intelligence chief says nearly 18,000 people are on French watch lists for radicalism, a growing figure.

Laurent Nunez, head of the DGSI agency, is also warning that the Islamic State group's retreat in the Middle East "doesn't weaken the level of threat" or diminish the extremists' ability to inspire violent attacks in the West via propaganda.

Speaking on RTL radio Tuesday, he said "the wish of the Islamic State group and al-Qaida to launch an attack is intact," though the current risk to France comes from homegrown extremists instead of those who come from foreign war zones.

Nunez said that of the nearly 18,000 on watch lists, some 4,000 are under active surveillance. A number of people who have carried out attacks in France in recent years had previously been flagged for radicalism.