In the most disturbing scenes, a security guard was set upon by a mob of supporters on the field.
It is the second violent incident in a month involving Chiefs, who will now certainly have to cough up the remainder of their R200,000 suspended sentence for the first incident that followed the 3-0 loss to Chippa United, and will face bigger sanctions.
The assault on the security guard was filmed on a cellphone by one fan sitting in the stands and not involved in the violence.
Stadium authorities said 18 people were injured in the riot, five of whom were taken to hospital.
In the wake of coach Steve Komphela's decision to resign as Amakhosi coach, Kaizer Chiefs legend Patrick Mayo says it was the right decision, albeit long overdue.
"If I'm the trigger for this (violence), then maybe one has to say 'maybe step aside.just stop the switch'".More news: Microsoft And Discord Team Up To Create One Network For Gamers!
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Despite a trophyless three season spell, at a post-match conference the South African said he believes he fulfilled what was expected of him. "We are anxious about the safety of the players, the coach and supporters".
Chiefs fans went on the rampage after their 2-0 loss to Free State Stars in the Nedbank Cup semi finals in Durban, setting parts of the Moses Mabhida Stadium alight, causing millions of Rand's worth of damage to television equipment and vehicles, and most distressingly meting out violence on security personnel, including severely injuring a woman.
Resulting from the ugly scenes, players from both clubs as well as their technical teams, had to run for cover, but a security guard was beaten and left unconscious on the pitch.
In a statement on Sunday, the PSL said "hooliganism and thuggery of this nature has no place in football".
"The term "field marshall" is used for officials controlling access control to the pitch and is not related to Marshall Security who are not the contracted security provider to Moses Mabhida Stadium", a statement read. South Africa's worst soccer disaster was in 2001 when 43 supporters died in a crush at a game, also between the Chiefs and Pirates in Johannesburg.