There has been a dramatic and tragic end to a protest in the Egyptian capital, Cairo. Police used water cannon to break up the demonstration by Sudanese refugees and failed asylum seekers. In the chaos, at least ten migrants were killed. Some 30 protesters and 23 police officers were reported injured. Riot police moved in after officials failed to persuade the Sudanese to leave voluntarily.The sit-in had been going on for three months outside the offices of the United Nations refugee agency in the city. Amid claims of discrimination in Egypt, some 3,000 Sudanese migrants have been demanding help from the UN in their efforts to leave and start new lives abroad. Many say it is not safe to return to Sudan despite a peace agreement that ended the north-south civil war. The UNHCR says it is prepared to provide more assistance but cannot arrange for all those involved to be resettled in another country. Protesters forcibly removed by police were placed on buses. The authorities said they were being taken to another site.