The Directorate of Criminal Investigations (DCI) has named a serving police inspector as a central suspect in the murder of clinical psychologist Dr Victoria Mutiso, saying investigators allege the officer supplied the firearm used in the killing and linked those suspected of financing the attack to the team that carried it out.
Speaking during a press briefing at Magereza House on Friday, August 7, DCI Director Mohammed Amin said Inspector Kenneth Kipkemboi Sang, officer in charge of Nderi Police Post under Kikuyu Police Station, had been identified by investigators as the alleged link between those suspected of financing the killing and those accused of carrying it out.
Sang is currently being sought by investigators.
“The evidence led our investigators to Kenya Police Service officers who, apparently and unfortunately, are alleged to have played critical roles in the conspiracy. Inspector Kenneth Kipkemboi Sang, the officer in charge of Nderi Police Post under Kikuyu Police Station, has been identified as the alleged link person between those suspected of financing the operation and the suspected attackers, as well as the alleged source of the firearm. This officer is currently being sought,” Amin said.
Ballistic analysis has since established that the firearm recovered from Nderi Police Post was a Jericho pistol, and investigators said the weapon had been officially issued to Sang.
A second officer, Police Constable Elijah Kibelion Kimoi, attached to Karinde Police Post, also under Kikuyu Police Station, has already been arrested. Investigators say the evidence gathered allegedly links him to the shooting, identifying him as the person they believe carried out the attack.
Investigators say the killing was allegedly orchestrated by Rose Mbithe Mulwa and her son, Christopher Mulwa, whom they describe as the suspected organisers and financiers of the conspiracy.
Two other suspects, Daniel Mwangi Njoroge and Kelvin Ngugi Kinuthia, were identified after detectives reviewed CCTV footage, gathered intelligence and conducted forensic analysis on evidence collected during the investigation.
Amin said investigators believe Njoroge acted as the operation’s central coordinator, allegedly driving a Toyota Land Cruiser Prado that was used to block the taxi carrying Dr Mutiso moments before the shooting. He said Njoroge also coordinated the movement of the suspected attackers and helped plan the operation.
A motorcycle rider accused of ferrying the suspected gunman to and from the scene has also been arrested and remains in custody.
Detectives established that two Prado vehicles were allegedly used in the operation — one to block Dr Mutiso’s taxi and another to transport the suspected attackers. Investigators said they traced the ownership of both vehicles and that the owners confirmed leasing them to a main suspect, recovering them on July 30, 2026.
GPS records from both vehicles placed them at the location of the shooting at the time investigators say the incident occurred.
Describing how investigators believe the attack unfolded, Amin said Dr Mutiso was travelling in an Uber when the vehicle slowed down and a man approached from the rear left side, where she was seated, before opening fire.
“The Uber driver saw a man wielding a pistol firing at Dr Mutiso. He sped off, avoiding the Prado, and drove directly to Kenyatta National Hospital seeking medical assistance,” Amin said.
Dr Mutiso was pronounced dead shortly after arriving at the hospital. A post-mortem examination established that she died from gunshot injuries.
Investigators recovered two spent cartridges from the scene, along with a bullet head retrieved during the post-mortem examination. The items were forwarded to the National Police Service Forensic Laboratory for ballistic testing.
The case was initially reported at Kilimani Police Station before being handed over to the DCI’s Homicide Investigations Bureau. The investigation was supported by the National Police Forensic Laboratory, the Criminal Research and Intelligence Bureau and other specialised units.
Amin said the DCI’s investigations indicate that the killing was allegedly linked to a longstanding land dispute, and that detectives are pursuing additional suspects believed to have financed and coordinated the attack.
He described the alleged involvement of serving police officers in the conspiracy as “a grave betrayal of the uniform and the public trust” and vowed that the DCI would pursue everyone implicated in the case.
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