He is also wanted in Spain for robbery and assault with a firearm.

Vlahovic, who was born in Montenegro in 1969, was said to be carrying fake Bulgarian identity documents at the time of his arrest.

His arrest comes as Radovan Karadzic, the wartime Bosnian Serb leader, stands on trial before the International Criminal Tribunal for the former Yugoslavia in the Hague, and follows the arrest of Ejup Ganic, an alleged Bosnian war crimes suspect, in London.