Two men suspected of having been involved in the Westbury shooting which left a woman dead and her child injured are expected to appear in the Johannesburg Magistrate's Court on Monday.
Lieutenant-Colonel Lungelo Dlamini said police were still searching for a third suspect.
The men face charges of murder and attempted murder.
Furious residents last week barricaded streets‚ calling for a “total shutdown” in the area to protest against drug dealing and gang-related crimes.
Images from the suburb on Monday morning showed that some people had returned to the streets in protest. Burning tyres and debris were littered on some of the roads.