Members of Ukraine's state security service detain a French citizen who had been planning attacks in France to coincide with the Euro 2016 football championship it is hosting, on the Ukrainian-Polish border in Volyn region, Ukraine

Ukraine’s state security service said on Monday that “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”.

On Saturday the Ukrainian border guard service reported 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.

Chief Vasily Gritsak who occupies the Strategic business unit (SBU)  said that “the man had made contact with armed groups in Ukraine with the aim of buying weapons and explosives”.

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

Gritsak also told journalists that “the Frenchman spoke negatively about his government’s actions, mass immigration, the spread of Islam and globalization, and also talked about plans to carry out several terrorist attacks“.

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.

French police are skeptical about the affair”, said a police source in Paris speaking on condition of anonymity.

“The person in question was not known to either police or intelligence services and the police have not found anything incriminating in the search of his home in the Meuse region of France”, the source said.

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.