A 19-year-old man was killed and three others wounded during an alleged attack by community members in Diepkloof, Soweto.
Police were called to Zone 5 where a street party had been held in the early hours on Thursday. Officers found four males stripped naked with visible injuries.
One victim was declared dead at the scene and three others were taken to hospital, said police spokesperson Col Dimakatso Nevhuhulwi.