VRS secured it in Operation Corridor 92 three years earlier. According to a Central Intelligence Agency analysis, the ground offensives of the HV, HVO and ARBiH in western Bosnia and Herzegovina, including Operation Southern Move, were a more significant contributor to bringing the Bosnian Serbs to the negotiation table than NATO airstrikes. A country-wide ceasefire went into effect on 12 October, followed by negotiations which produced the Dayton Agreement on 21 November and ended the Bosnian War. The offensive displaced 10,000 Serb refugees from Mrkonjić Grad, adding to a growing humanitarian crisis as another 30,000 Serbs fled Sanski Most before the ARBiH captured it in the final days of Operation Sana. Approximately 6,000 non-Serbs were forced to flee their homes in Prijedor and Novi Grad by Bosnian Serb forces. According to Bosnian Serb sources, 480 Serbs died or went missing in the fighting in the area of Mrkonjić Grad. The figure includes 181 bodies recovered in a mass grave at the town's Serbian Orthodox cemetery. According to the Republika Srpska police who investigated the scene and interviewed witnesses, most of the dead were VRS prisoners of war or civilians who were killed by the 4th Guards Brigade to avenge the death of Colonel Andrija Matijaš, the brigade's deputy commander. The results of the investigation were forwarded to the International Criminal Tribunal for the former Yugoslavia (ICTY), but the ICTY did not pursue the matter. , an investigation by the Bosnia and Herzegovina authorities against 27 high-ranking HV and HVO officers and Croatian officials is ongoing. In 2013, an officer and two soldiers of the 7th Guards Brigade charged with killing four Serb civilians near Mrkonjić Grad were acquitted, pending appeal. Footnotes References Books News reports 1995 in Bosnia and Herzegovina Battles involving Croatia Battles of the Bosnian War Bosnian War Conflicts in 1995 Military operations of the Bosnian War October 1995 events in Europe