The Rwandan genocide of 1994 was perpetrated by the provisional Rwandan government on the Tutsi population and Hutu moderates. In response the Rwandan Patriotic Front (RPF), formed by Tutsi refugees in Uganda, which already controlled large areas of northern Rwanda following its 1990 invasion and the ongoing Civil War, overthrew the Hutu government in Kigali and forced it out. One of the many UN missions attempted to provide a safe zone in the volatile situation and provided safe passage for the refugees. From 13 June to 14 July 1994, 10,000 to 12,000 refugees per day crossed the border to Goma. The massive influx created a severe humanitarian crisis, as there was an acute lack of shelter, food and water. However, the Zaïrean government took it upon itself to garner attention for the situation. Shortly after the arrival of nearly one million refugees, a deadly cholera outbreak claimed thousands of lives in the Hutu refugee camps around Goma. RPF aligned forces, mainly actors in the conflict, crossed the border and in acts of revenge also claimed several lives.