Police officers check a car in Paris as French authorities announced on Monday that emergency traffic-limitation measures to combat high pollution levels in Paris would not be extended as forecasts showed the air was clearing. Paris authorities halved the number of cars on the road by banning all vehicles with licence plates ending in odd numbers after a prolonged spike in pollution last week. — AP

Paris — The threat of a militant attack in France has reached a level “without precedent” and new attacks are inevitable according to top counter-terrorism officials.

“The threat is permanent” said one high-level official in the defence ministry speaking on condition of anonymity.

“Not one day goes by without an alert the discovery of a network trying to send people to Syria or Iraq or an intervention (by the security services).

“The number of targets has exploded. There are two or three thousand maybe four thousand people identified or suspected of evil intentions.”

Nor are they all amateurs the source added — many are highly educated. “They are pros not drop-outs” he said.

Defence ministry specialists say the militants “use the best encryption and concealment techniques” and that security services are “playing catch-up”. “Every time we get our hands on a network we see they are each using seven or eight SIM cards changing them constantly. And the most cunning don’t go near phones at all — they use messengers.”

The biggest concerns relate to the estimated 200 individuals who have returned from training or fighting in areas held by the Daesh State group in Iraq and Syria.

“They have lost all inhibitions about violence” said another top counter-terrorism official also speaking on condition of anonymity.

Security services place them under the tightest possible surveillance but resources are limited and the authorities are also painfully aware that militants may wait years before acting.

That was the case with the Kouachi brothers who carried out the attack on Charlie Hebdo satirical magazine in January. They had long-standing links to militant networks in Paris and one had travelled to Yemen for training back in 2011 but they had gradually fallen off the radar of security services after laying low for several years.

Officials also fear that competition between militant groups may drive them to ever-more brutal acts.

“Al Qaeda needs to restore its prestige and will try to compete with Daesh with complex and major actions” said the official.

He highlighted the threat from an Al Qaeda sub-group known as Khorasan which is still thought to be planning a major airline attack.

One of Khorasan’s key members is a French explosives expert David Drugeon who is thought to have survived an attempted assassination by a US drone strike last year.

That compares with the more conventional military threat posed by Daesh the official said “which is in the process of training commandos and sending them onto our territory with high-quality equipment”.

Since the attacks in Paris in January that left 17 dead France has been on the highest possible alert with thousands of police and troops deployed at sensitive sites such as media headquarters and synagogues.

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