For now, Anthony Mwangi Kamau is managing to outrun the long arm of the law.
After 15 arrests, nine of which have led to charges for the twin murders of lawyer Mathews Kyalo Mbobu and researcher Victoria Nthunya Mutiso, it is only Mwangi that police have linked to the murder but failed to apprehend.
Mbobu was shot dead on September 9, 2025, in the evening along Magadi Road on his way home. The gunman escaped on a motorcycle, riding as a pillion passenger. Mutiso was shot dead on July 20, 2026, in Upper Hill while in an Uber and on her way to work.
Rose Mbithe Mulwa (centre), her son Chris (right) and her daughter Angela Mulwa appear before the Milimani High Court on September 29, 2026, where they pleaded not guilty to the murder of Dr Victoria Mutiso.
Photo credit: Billy Ogada | Nation
The Directorate of Criminal Investigations (DCI) holds that the two murders were motivated by a protracted dispute over land in Mavoko.
The DCI said that Rose Mulwa and her two children, Angela and Chris, were on one end of the land battle.
Professor David Ndetei was wheeled into the Milimani High Court for cross-examination regarding his affidavit opposing the release of his ex-wife, Rose Mbithe, and her children, who have been charged with the murder of Dr Victoria Mutiso.
Photo credit: Richard Munguti | Nation
At the other end were Mulwa’s ex-husband, David Ndetei, and his wife Mutiso. Mbobu was the lawyer representing Ndetei and Mutiso in the land dispute.
Mwangi, an officer close to the investigation told the Nation on Tuesday, October 27, introduced the Mulwas to police inspector Kenneth Kipkemboi Sang, who is alleged to have roped in two separate sets of his colleagues to assassinate Mbobu and Mutiso.
Investigations show that Mwangi and Sang knew each other in Kikuyu, Kiambu County. Mwangi’s rural home is in Kikuyu Sub-County, while Sang was stationed in the same area.
In that area, Mwangi was known as a “Mr fix it” and mobiliser, the investigator added.
But long before Mwangi and Sang struck friendship, the former was well known to Angela Sang.
Detectives are working backwards to establish the age and nature of the friendship between Angela and Mwangi, maintaining that their relationship was the driving factor in introducing the Mulwas to Sang, who allegedly set in motion the assassination plots.
A witness assisting police with investigations said in his statement that on September 9, 2025, in the morning, Sang and Mwangi arrived at a restaurant in Pangani for a meeting in the same car.
The witness, a bodaboda rider, was roped into the meeting by police constable Julius Cheruiyot, who was based at Pangani police station. Investigators believe that Cheruiyot was in turn roped into the Mbobu murder plot by Sang.
Mwangi allegedly paid the bodaboda rider a Sh1,000 deposit to transport Cheruiyot to and from Magadi Road, where Mbobu was killed. Mwangi sent the bodaboda rider another Sh2,000 less than two hours after the lawyer was killed.
Inspector Kenneth Sang at the Milimani Law Courts on October 26, 2026. The police officer has been accused in the murder of lawyer Mathew Kyalo Mbobu and clinical psychiatrist Dr Victoria Mutiso (inset).
Photo credit: Richard Munguti | Nation Media Group
One of the investigators who spoke to the Nation on condition of anonymity said that Mwangi was allegedly paid Sh600,000 to facilitate Mutiso’s death, and that he gave half the amount to Sang.
Sang allegedly recruited police constables Elijah Kibelion Kimoi of Karinde police post and Collins Bett Kiplangat of Thogoto police station for the job.
An officer involved with the case said that Sang may not have paid his juniors the amounts they agreed on. He said that investigations show that the three police officers had started bickering over payment when Sang went on the run on July 30.
Others allegedly roped into the Mutiso murder plot were Daniel Mwangi Njoroge and Kelvin Ngugi Kinuthia. Police said that Njoroge was among the planners and that he drove one of the vehicles used to block the Uber Mutiso was travelling in.
Police believe that Mwangi started his life on the run on the same day that Mutiso was killed, as his two known mobile phone numbers were switched off hours after the researcher was murdered.
Detectives believe that Mwangi cut ties with known relatives, friends and associates, which has made it difficult to establish where he is or has been.
Other suspects in the case, including Sang, contacted some friends and relatives at some point, which helped in gathering intelligence on their whereabouts and eventually led to their arrest.
DCI boss Mohamed Amin said that “investigations are still ongoing” as he expressed confidence that his officers will eventually arrest Mwangi.
A separate source said that detectives are now investigating various firearms which were issued to the five police officers – Sang, Cheruiyot, Kiplangat, Kimoi and Kenneth Kipkemoi Borboroi – over the years to establish whether the service weapons may be linked to other unsolved crimes.
That investigation line follows the discovery that the guns used to kill Mbobu and Mutiso were police-issued pistols.
Dr Victoria Mutiso, a clinical psychologist who was gunned down in Nairobi on July 29, 2026.
Ballistics tests showed that Mutiso was killed by bullets from a Mini Jericho pistol owned by the National Police Service and which had been issued to Sang for official duty.
Mbobu, on the other hand, was felled by bullets from a CZ 85B Ceska pistol which the police had issued to Cheruiyot for official duty.
Those arrested in connection with Mbobu’s murder are the Mulwas, Sang, Cheruiyot, Borboi, an unnamed bodaboda rider and Noah Kipkirui Langat.
The bodaboda rider, Sang and Langat have not been charged. Police and prosecutors are in the process of turning the bodaboda rider into a State witness.
In connection with the Mutiso murder, those arrested are the Mulwas, Sang, Kimoi, Kiplangat, Njoroge, Kinuthia, Maritim Kimutai, Pius Muiru Mbugua and Samuel Karanja Gathoni.
Gathoni, Njoroge, Kinuthia and Sang have not been charged yet.
Prosecutors on Monday secured orders to have Sang held for 14 days pending conclusion of investigations, with the intention of charging him with both murders.
