The suspects were arrested hours after the incident. They made their second court appearance at the Newlands Magistrate's Court on Thursday morning.
The case was postponed to October 3 for a formal bail application. The men will remain in custody until their next appearance.
Brixton police spokeswoman Jeanette Backhoff confirmed that the suspects have previous cases and current evidence suggests that they are part of a syndicate targeting student residential areas in Johannesburg.
Backhoff said more suspects linked to this group could be arrested soon.
“A fourth suspect linked to this group was also arrested last week. Investigators are gathering more information that would possibly lead to more arrests‚” she said.