The two were apparently socialising in the early hours of Saturday morning when an argument broke out and escalated into a physical confrontation.
A series of tweets posted by Themba Rumbu on Monday explains how Fritz Joubert allegedly killed his cousin, Anele Hoyana, and held the man’s wife and children hostage.
In a video, Joubert is seen using his fists, as well as a rifle, to beat Hoyana to death.
He also refers to Hoyana as Satan, claiming the man tried to bewitch him.
He refers to himself as “The Chosen One” who is doing what God wants of him.
Neighbours called the police and Joubert was shot after he attacked an officer.