Bosnia’s Serb entity plunged deeper into political crisis Monday as Prime Minister Radovan Viskovic resigned, paving the way for a government reshuffle while banned leader Milorad Dodik continues to defy the central government.

The announcement comes days after Republika Srpska President Milorad Dodik called for a “national unity government” in response to his conviction for flouting decisions made by the international envoy who enforces Bosnia's peace deal.

Bosnia has been split between Serb and Bosniak-Croat political units since the 1992-95 war, which left tens of thousands dead. The country is held together by weak central institutions.

At a news conference in Banja Luka, Prime Minister Radovan Viskovic did not explain why he was resigning after nearly seven years in office, stating only that a new government would be formed.

“I leave my successor a stable Republika Srpska, and I wish the new government success,” the 61-year-old said, standing next to Dodik, who remains the de facto leader of the Bosnian Serbs.