The Bosnian Serbs arrested them and sent them back to Serbia , but they soon returned .
They captured the Serbian mayor of Zvornik and tried to take control of the town using weapons from the territorial defence force .
The Bosnian Serbs arrested them and sent them back to Serbian , but they soon returned .
They captured the Serbian mayor of Zvornik and tried to take control of the town using weapons from the territorial defence force .