Frenchman with 125kg of explosives, rocket launchers and rifles 'was planning 15 attacks on Euro 2016'

French Police forces take part in a mock attack drill outside the Grand Stade stadium (aka Parc Olympique Lyonnais or the Stade des Lumieres) in Decines, near Lyon, France, in preparation of security measures for the UEFA 2016 European Championship May 30, 2016. REUTERS/Robert Pratta

Ukraine's state security service said on Monday a French citizen detained in late May on the border with Poland had been planning attacks in France to coincide with the Euro 2016 soccer championship it is hosting.

The Ukrainian border guard service reported on Saturday that the unnamed 25-year-old had been arrested with an arsenal of weapons and explosives including rocket launchers and Kalashnikov assault rifles in his vehicle.

He was found with 125kg of the explosive TNT.

SBU chief Vasyl Hrytsak said the man had made contact with armed groups in Ukraine with the aim of buying weapons and explosives.

His intended targets included Jewish and Muslim places of worship and buildings involved with the soccer tournament, Gritsak said. French government administration buildings, including those dealing with tax collection, were also a target.

"The Frenchman spoke negatively about his government's actions, mass immigration, the spread of Islam and globalisation, and also talked about plans to carry out several terrorist attacks," Gritsak told journalists.

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French police in a drill preparing for the Euros

"The SBU was able to prevent a series of 15 acts of terror (planned) for the eve and during the Euro soccer championship," he said.

A French foreign ministry spokesman confirmed that a Frenchman has been arrested in Ukraine and said the ministry was in contact with Ukrainian authorities.

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The Paris police chief wants more security staff to protect fans at Euro2016

Meanwhile a police source in Paris said French police were sceptical about the affair.

The person in question was not known to either police or intelligence services and police had not found anything incriminating in a search of his home in the Meuse region of France, the source said, speaking on condition of anonymity.

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French police take part in a mock attack drill outside the Grand Stade stadium in Decines, near Lyon, France, in preparation of security measures for the Euro 2016 soccer tournament. Photo: Reuters/Robert Pratta

Security officials in Europe are on high alert after Islamist militants killed 130 people in Paris last November and suicide bombers killed 32 people at Belgium's main international airport and on the Brussels metro in March.

The United States has warned its citizens of possible further attacks in Europe, saying targets could include Euro 2016 which opens in France on Friday.

Gritsak said the SBU had sold deactivated weapons to the suspect after they found out that he was looking to purchase the arms.

Reuters