Director of Public Prosecutions Noordin Haji has said his office will work with the Internal Affairs Unit of the Police and the National Police Service to probe the disappearance of two Indians and their driver.
The Prosecution sought to have a 21-day custodial to pave way for the completion of investigations in the case.
A statement released by the Office of the Director of Public Prosecution, however, said the defence challenged the jurisdiction of the IAU to investigate the case.
"The office reiterates its commitment to upholding the rule of law and respect for Human Rights and persons found culpable shall be prosecuted to the full extent of the law," Haji said.
The four police officers arrested in connection with the disappearance were on Monday arraigned.
The four include Chief Inspector of Police Peter Muthee, Sergeant Francis Muendo and Corporals John Mwangi and Joseph Kamau.
The officers, who are linked to the recently disbanded Special Service Unit (SSU) of the Directorate of Criminal Investigations (DCI), were arrested on Friday, October 21.
The other two suspects were previously arrested and arraigned on October 6 and October 7, respectively.
They were charged with the disappearances of the victims, Mohamed Zaid Sami, Zulfiqar Ahmed Khan and their driver Nicodemus Mwania Mwange.
The court then granted the prosecution the 21-day custodial order.
The case of the two, who include Edward Kamau and Fabian Koshn will be mentioned on Thursday, October 27.
The court is set to rule on the officers' defence's preliminary objection on Wednesday, October 26.
