Forensic investigator Paul O’Sullivan has filed a counter-defamation lawsuit of R10 million against KwaZulu-Natal Police Commissioner, Nhlanhla Mkhwanazi.

Mkhwanazi filed a R5 million defamation lawsuit against O’Sullivan last month.

In court papers before the High Court in Johannesburg, O’Sullivan argues that he was accused of unspecified crimes by Mkhwanazi and was labelled an agent working for someone else.

He’s denied the allegations as unsubstantiated and wants Mkhwanazi’s lawsuit to be dismissed with costs.