On 7 April, as the genocide started, RPF commander Paul Kagame warned the interim government and the United Nations peacekeepers that he would resume the civil war if the killing did not stop. The next day Rwandan Army forces attacked the national parliament building from several directions but RPF troops stationed there successfully fought back. The RPF then crossed the demilitarised zone from their territory in the north and began an attack on three fronts, leaving their opponents unsure of their true intentions or whether an assault on Kigali was imminent. UNAMIR contingents in the demilitarised zone withdrew to their camps to avoid being caught in the fighting. Kagame refused to talk to the interim government, believing it was just a cover for Bagosora's rule and not committed to ending the genocide. Over the next few days the RPF moved steadily south through the eastern part of the country, capturing Gabiro and large areas of the countryside to the north and east of Kigali. Their unit stationed in Kigali was isolated from the rest of their forces but a unit of young soldiers successfully crossed government-held territory to link up with them. They avoided attacking Kigali or Byumba at this stage but conducted manoeuvres designed to encircle the cities and cut off supply routes. The RPF also allowed Tutsi refugees from Uganda to settle behind the front line in the RPF controlled areas.