The City Press reported on Sunday that the inquiry, headed by Judge Cornelis Claassen found that the suspended commissioner should be dismissed as well.
Sources connected to the inquiry told the paper that the board "also found that Phiyega lied to the Marikana Commission of Inquiry, headed by retired Judge Ian Farlam. Phiyega is challenging the findings of the commission."
The inquiry also found that the commissioner did not reveal that there were two crime scenes in Marikana, where miners were shot by police in August 2012.
"Scene 1, at which some of the mine workers were killed; and the infamous Scene 2, where police pursued and shot fleeing mine workers, many of whom were killed while hiding behind rocks."
Sources told the paper that Phiyega was aware of the inquiry's findings and was planning on fighting to clear her name and would not back down quietly.
"She is not going to go without a fight. She does not want a golden handshake; she wants to clear her name," said the source.