The DPP has concurred with detectives' recommendation for two brothers to be charged with the murder of The Star journalist Eric Oloo.
The Nation has established that Director of Public Prosecution Noordin Haji has already drawn and signed the charge sheet for the two identified as 28 year-old Victor Ogola Luta and Franklin Joel Luta, 25.
A detective who is part of the probe said the DPP returned the file to them and that the brothers will be taken to a Siaya court on Tuesday morning.
"They also agreed with our recommendation to have Chief Inspector Sabina Kerubo used as a state witness," the detective said.
A source who spoke to the Nation on condition of anonymity revealed that six witnesses have filed their statements and that Ms Kerubo will be the first to testify against the suspects, one of whom was a regular guest at her house.
He said the witnesses include the inspector's daughter, who is listed as the second prosecution witness, the house help, the landlord and the doctor who carried out Mr Oloo's postmortem.
"The rest are police officers who have been involved in the probe" he said.
The source further said detectives will ask the court to drop their application to detain Ms Kerubo for a longer period for the investigation.
"We intend to [inform] the court that we are through with her and wish the application closed since she will now be our witness in the case."
Mr Oloo was found murdered in the house of the senior policewoman on November 21.
She was later held alongside her daughter, the house help and the two brothers.
According to the autopsy report, the journalist died due to head and abdominal injuries that resulted from being hit with a blunt object.
It is said that Mr Oloo was pulled out of Ms Kerubo's bedroom before he was killed.
The journalist was buried at his Uhor village home in Ugunja last Saturday, a ceremony at which his family and area leaders led by Ugunja's Opiyo Wandayi and Ugenya's David Ochieng pressed for justice.