A 25-year-old man was fatally stabbed in Ratanda during an altercation with a family member on November 4.
The Ratanda SAPS responded to a complaint of a fight in progress at about 04:00.
The man, reportedly stabbed twice in the neck, and a 58-year-old male relative were taken to Heidelberg Hospital.
The younger man was declared dead upon arrival at the hospital.
The Heidelberg SAPS arrested the other male.