The South African Government has warned it will not tolerate any more violent protests in townships where residents are demanding better services, such as water and housing.
Police fired rubber bullets and teargas on Wednesday at rioters who were calling for the removal of local officials of the ruling ANC party they accuse of corruption. Scores of protesters have been arrested.
Police said Siyathemba township, southeast of Johannesburg, is now calm after four days of unrest.
The warning comes as the leader of unemployed protesters in Durban said the anger was the tip of the iceberg.
The ABC reportds the riots are seen as a major challenge for South Africa's new President, Jacob Zuma.