The HV and HVO agreed to assist the ARBiH, and launched Operation Southern Move to relieve the situation in Ključ. In this operation, the HV and the HVO fielded 11,000-12,000 troops who captured Mrkonjić Grad from three VRS brigades, thus relieving the pressure on the ARBiH in Ključ. The HV and the HVO then captured the Bočac Hydroelectric Power Station, the last remaining electrical power source available to the Bosnian Serbs in western Bosnia and Herzegovina. On 11 October, the HV and HVO reached a point on Mount Manjača, south of Banja Luka.