During a cross-examination, North West Lieutenant Colonel Omphile Joseph Merafe told the Marikana commission he is very "heartbroken".
The Farlam commission has heard that the police at Marikana were dissatisified with their commander, Major General William Mpembe.
Police witness Mr X will be allowed to testify in camera by video link but his name and photo must be disclosed to the evidence leaders and parties.
Senior cop Salmon Vermaak has outlined internal problems that contributed to the Marikana killings during his testimony at at the Farlam commission.
Serious doubts have been raised about the legitimacy of the police submission to the Marikana inquiry for the testimony of Mr X to be held in camera.
Marikana has scarred villagers in the Eastern Cape, where the ANC is losing further ground.
The laywer says the SAPS must show that Mr X's life is in danger, otherwise he has a duty to inform his clients of the man's identity.
North West air wing chief Salmon Vermaak has broken ranks to give his 'true' version of the Marikana events.
This has become the standard method for authorities trying to avoid taking responsibility for wrongdoing, such as killing 34 miners at Marikana.
We wrap up weekly findings from two of SA's most important commissions of inquiry - the Farlam Marikana probe, and the Seriti arms deal inquiry.
The public rushes pell-mell to pore over tales told by pale males, yet scorns deeper societal tragedies, writes Nikiwe Bikitsha.
While most eyes were glued on the pscar Pistorius trial, the Seriti arms deal and Marikana commissions continued their work.
Dali Mpofu has told the Farlam commission that police should have foreseen that strikers would retaliate to it using barbed wire to control crowds.
The Marikana commission has resumed with the questioning of the police officer in charge of the intervention in the mine's wage-related strike.
The operational commander at Marikana has admitted he became aware of the deadly shootings at Lonmin mine nearly an hour after the incident occured.
The emergence of an attempted cover-up has painted key police witnesses into a corner, writes Kwanele Sosibo.
The Farlam commission has heard the shooting of miners at Marikana was not due to the police's dispersal plan but to the individual action of police.
"Fourth camera angle" Marikana footage appears to further implicate police and raises questions about who ordered the use of deadly force.
Legal Aid SA has agreed to cover the legal costs of injured miners while deciding whether to appeal the court decision, which ordered them to do so.
A high court ruling ordering Legal Aid SA to pay the legal fees of Marikana massacre victims sets a precedent for future commissions.