"I will not stand back," was national Director of Public Prosecutions Bulelani Ngcuka's message on Wednesday at the start of his testimony before the Hefer Commission.

The chief prosecutor read a prepared statement to the commission, warning that he would not back off from investigating his accusers.

"We are all equal before the law, no matter how wealthy or in which position," he added.

The commission is probing allegations that Ngcuka served as an agent for the apartheid government and consequently abused his current powers.

He said on Wednesday that he expected some to be baying for his blood if he performed his duties (as head of the National Prosecuting Authority) without fear or favour.

However, it never occurred to him that his former liberation struggle comrades and leaders would be among them.

Ngcuka was apparently referring to former transport minister Mac Maharaj and former intelligence commander Mo Shaik, who are his main accusers.

Ngcuka said he would not retreat and run back to the "hole" from which he came, as Shaik's brother Schabir earlier told him to do.

With this Schabir -- who is being prosecuted by the NPA -- meant Middeldrift in the Eastern Cape where he was born, Ngcuka explained.

He said he did not intend to break the confidentiality agreement between him and a group of editors whom he gave an off-the-record briefing in July.

Maharaj and former City Press editor Vusi Mona earlier accused Ngcuka of defaming people at this meeting whom his Scorpions unit investigated.

Ngcuka denied all the allegations on Wednesday.

"I broke no law, I defamed no-one and I made no racist remarks about my fellow South Africans of Indian descent," he said.

He also denied any further abuse of power, saying he was deeply respectful of the office he held.

He said he knew only too well what it was like to be at the receiving end of the abuse of state power. He was referring to his suffering at the hands of the apartheid government's security police.

Ngcuka reiterated that he was not before the commission to clear his name or prove his innocence.

"There is no need for that," he said.

He denied that he ever informed on his former struggle comrades, saying none of them were ever arrested because of what he said or did - Sapa