Serbian police arrested 11 people accused of defacing Jewish sites and placing pigs’ heads outside mosques in and around Paris this month. Police said the suspects were acting under the direction of a foreign intelligence service.

The Serbian Interior Ministry announced that the arrests took place in Belgrade and in Velika Plana, a town about 100 kilometres south of the capital, in coordination with national security services. A twelfth suspect remains at large and is accused of training the group "on the instructions of a foreign intelligence service," the ministry said in a statement.

"Their objective was also to spread ideas advocating and inciting hatred, discrimination and violence based on differences," the ministry added.

French investigators had been pursuing leads since early S

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