Postpublished at 12:05 British Summer Time 17 April 2015
The BBC's Milton Nkosi tweets, external from Johannesburg: "I am outside Jeppe hostel where there is a tense stand off between police and an angry mob." And he posts this picture adding: "This crowd is taunting the police and media. They want to attack foreign owned shops."
In another tweet our reporter says: "The police have created a buffer between the mob and foreign owned shops."