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Fears of terror attack at Euro 2016
02:41 - Source: CNN

Story highlights

NEW: British PM Cameron describes threat as 'severe'

Ukraine security services arrest Frenchman who was planning attacks at championship

CNN  — 

Gun attacks, remotely detonated bombs and even drones carrying explosives and chemical weapons: These are just a few of the terrorist threats French authorities are preparing for at the Euro 2016 football championship, which gets underway on Friday.

Just days before the championship kicks off, Ukraine security services said they had arrested a Frenchman and an accomplice who were planning attacks on French targets before and during the tournament. The arrests are a reminder that the soccer tournament faces more terrorism threats than just ISIS.

The U.S. State Department has issued a warning about the potential terror risk associated the tournament, and on Wednesday, British Prime Minister David Cameron in parliament described the threat at the event as “severe.” He said the half a million people expected to travel from Britain to France for the championship should be aware of the threat level.

Cameron said: “This is a very big security undertaking. We have set out very clear travel advice because people do need to know that obviously there is a significant terror threat in France today and there is a potential threat to this tournament.”

“The French security operation is enormous,” he added.

Britain’s Foreign Office issued a new travel advisory for France on Tuesday, warning of a “high threat from terrorism,” specifically associated with ISIS.

Terror alert app

The French Interior Ministry has launched an app called #SAIP – a French acronym for Alert and Information System for the Public – to alert users to any possible terror attacks or incidents nearby.

The app will give “behavioral advice” and “instructions adapted to the nature of the alert,” the ministry explained on Twitter.

“During Euro 2016, stadiums, fan zones, venues broadcasting the tournament and transport hubs and links represent potential targets for terrorist attacks,” says the advisory.

“You should be vigilant at all times, especially in areas hosting Euro 2016 events, and follow the advice of local French authorities.”

Ukraine arrests suspects who wanted to attack Euro 2016.

As President Francois Hollande and other French officials have acknowledged, 100% security and zero risk are impossible to guarantee. ISIS has made clear its intent to attack the tournament.

In a radio interview with France Info on Sunday, Hollande said: “We have invested all the means to succeed, and we must not allow ourselves to be pressured by the threat.” But he cautioned: “It exists, this threat.”

France has extended its state of emergency, introduced after the terror attacks in Paris last November, until the end of July. It gives police greater powers of house arrest and allows for demonstrations and rallies to be banned.

Paris Attacks: Full coverage

51 games, 10 venues

The task of securing a major sporting event that will attract several million fans from across the continent and feature 51 games at 10 venues is immense.

Nearly 100,000 French security forces will be deployed to safeguard the tournament, at match venues, fan zones and in other areas where fans will congregate.

The bases of the 24 competing countries will be heavily guarded and have been declared no-fly zones, as have the stadiums.

Stade de France: Grisly reminder of disaster averted

Authorities have also introduced technology around venues that’s designed to take control of and divert suspect drones rather than destroy them, according to security sources.

An early test of security measures – at the French Cup Final between Paris St. Germain and Olympique de Marseille last month – was not a great success.

Despite heightened security, some fans were able to smuggle in and let off firecrackers and smoke bombs. Recriminations involving private security firms and the police followed.

Fan zones for Euro 2016, where supporters will be able to watch games on giant outdoor screens, will also need to be secured. The largest, at the foot of the Eiffel Tower, is expected to handle 90,000 fans.

Metal detectors, video surveillance, sniffer dogs and a large police presence are among the security precautions for the zones; fans will not be allowed to bring in large bags.

Terrorist prize

The lure of an event like Euro 2016 for ISIS or al Qaeda is considerable, with billions of people around the globe watching live television coverage of the games and fan zones.

The Stade de France attacks in November also shows the terrorists were keen on targeting sports venues.

ISIS would regard an attack anywhere in France during Euro 2016 or the Tour de France cycling event in July as a success.

How the Paris, Brussels attackers sought to target Euro 2016

In its latest travel warning, the U.S. State Department noted that “Euro Cup Stadiums, fan zones and unaffiliated entertainment venues broadcasting the tournaments in France represent potential targets for terrorists.”

Patrick Calvar, head of France’s internal security, said: “We risk being confronted by a new form of attack – a terrorist campaign characterized by the placing of explosive devices in places where there are large crowds and repeating this type of action to create a climate of panic.”

Intense security measures, including body searches and ID checks, and reducing the number of access points to stadia, may lead to large concentrations of fans trying to get into games – an inviting target for terrorist bombings.

The fact that several of the competing nations at Euro 2016 are part of the anti-ISIS coalition is an added incentive to the group.

Euro 2016: Is this the secret to success?

In a recent audio message, ISIS spokesman and leading ideologue, Mohammed al Adnani, called on Muslims in Europe to step up attacks.

“The smallest action you carry out in their homelands is better and more favored by us from the biggest of actions in our midst; it is more successful for us and more brutalizing to them,” he said.

Adnani added that civilians were a legitimate target. “Know that targeting so-called civilians is more beloved to us…more brutalizing and painful to them,” he said.

According to Mohamed Abrini, who was arrested after the Brussels attacks and is also suspected of involvement in last November’s Paris attacks, Euro 2016 was the ultimate target of the cell.

Belgian investigators believe that only when key members of the group were arrested, did others change their plans and carry out the March attacks in the Belgian capital.

The great unknown is whether other ISIS members who have returned to Europe have been able to organize and plan further attacks without being tracked.

According to French intelligence officials, more than 2,000 French citizens or residents are known to have links to jihadist networks in Syria and Iraq.

What Paris can learn from London 2012 Olympics

The man tasked with preventing terror attacks at the London Olympics in 2012, Richard Walton, says an aggressive, multi-layered approach is essential.

Walton, then head of the Counter Terrorism Command of the London Metropolitan Police, says every scenario was planned for – including terrorists flying into the Olympic stadium using a microlight, a drone armed with explosives flying into an open venue, and even a speedboat being used to target Olympic sites on the River Thames.

UK police also took an aggressive approach to possible suspects – by arresting them for minor criminal offenses.

Writing in the new edition of the Combating Terrorism Center’s monthly publication “Sentinel,” Walton says “approximately 40% of the several thousand Islamist extremists across the country were committing low-level criminality with offenses that included benefit fraud, disqualified driving, and even drug crimes.”

Venues were also in lockdown weeks before events and after they had been subjected to an inch-by-inch security sweep. Access was then strictly limited through airport-style search regimes.

“Our largely unarmed police presence at the London Olympics created a relaxed atmosphere, and much of our armed policing response capabilities were not visible to those participating or watching the games,” says Walton of London’s security style.

Severe flooding in northern France and a rash of labor strikes – with the threat of more to come – have not helped preparations for a relaxed Euro 2016. But President Hollande says his government is determined to make Euro 2016 “a European festival, a festival of the people.”