At least 17 people were killed and dozens wounded in Sudan's capital during clashes that erupted when police tried to relocate refugees.
Police say 14 police officers and three civilians died in Wednesday's violence in a squatter camp in southern Khartoum.
They say refugees attacked police vehicles and burned down the local police station after officers tried to move them to another camp outside the city.
Witnesses say police opened fire on the crowd, although police deny this.
The United Nations condemned the Sudanese government for trying to forcibly relocate the refugees.
Most are from southern Sudan, where the government and rebels fought for more than two decades. A peace deal signed earlier this year officially ended the conflict.
Some information for this report provided by AP, AFP and Reuters.