Authorities say hundreds of police have on Tuesday raided a Muslim village in Bosnia.
Codenamed "Light", the operation by 600 police officers in the northern village of Gornja Maoca was the largest since the end of the country's 1992-95 war, said Boris Grubesic, a spokesman for the prosecutor who ordered the swoop.
"Seven people were arrested, including the local community leader Nusret Imamovic," Grubesic said.
One of the detainees was not a Bosnian citizen, he added.
Some foreign Muslims, who stayed on after fighting alongside Bosnian Muslims against Serbs and Croats in the war, formed their own community in the village.
Most foreign fighters have left the Balkan country which is still an international protectorate.
Police from both of Bosnia's autonomous regions, the Serb Republic and the Muslim-Croat federation, as well as the national security service took part in the operation.