Bosnia's autonomous Serb region passed legislation barring the national police and judiciary from its territory after a state court banned its separatist leader Milorad Dodik from politics for six years and sentenced him to a year in prison.

Bosnia's international high representative on Friday slammed the political leadership of the country's Serb statelet, accusing them of seeking to destabilise the Balkan country and called for an end to actions that threaten to "undermine" its peace accords.