Three brothers allegedly confessed to killing their sibling in Protea Glen, Soweto when he became violent after drinking, police said on Tuesday.
Police spokesperson Sergeant Vincent Mashiteng said the incident occurred at about 01:00 on Tuesday in Extension 3 when the 30-year-old brother was drunk and started fighting with them.
"It is also alleged that the brothers fought back, assaulted him with a wooden plank and stabbed him with a screwdriver on the upper body and he lost consciousness.
"The police were called and the paramedics confirmed the man dead on the scene."
The brothers - two minors aged 17 and another aged 21 - allegedly confessed and were arrested and charged with murder.
The minors were detained at a juvenile facility and all three are expected to appear in the Protea Magistrate's Court this week.