The investigation into the shocking murder of Dr Victoria Nthunya Mutiso has taken a dramatic turn after detectives arrested three more suspects in a coordinated operation spanning Kenya and Uganda.
The Directorate of Criminal Investigations (DCI) said two suspects were arrested in Kampala after allegedly fleeing Kenya following the killing, while a third suspect was intercepted in Nairobi as investigators continued dismantling the network behind the assassination.
The latest arrests include Police Constable Bett Kiplangat Collins, number 118491, attached to Thogoto Police Station, and civilian Pius Muiru Muiru Mbugua. They were arrested at Kyanja Heights flats in Nakawa, Kampala, with assistance from the Uganda Police Force.
The two suspects are being held at Jinja Road Police Station as arrangements are made to escort them back to Kenya.
In Nairobi, detectives intercepted Samuel Karanja Gathoni, alias “Lawyer”, in the Langata Multi-Media area while he was reportedly travelling towards Ongata Rongai.
The DCI said the arrests followed forensic analysis by a specialised team drawn from its Crime Research and Intelligence Bureau, Operations Directorate and Homicide Bureau.
Investigators allege that PC Bett played a crucial role in the operation by conducting surveillance and serving as co-driver to Daniel Mwangi Njoroge, whom detectives have identified as a central organiser.
Njoroge was allegedly driving Land Cruiser Prado registration KDH 600A, which investigators say was used to block the Uber carrying Dr Mutiso in Upper Hill on the morning of July 29, 2026.
Moments after the vehicle was allegedly boxed in, Dr Mutiso was fatally shot.
Detectives have also linked Mbugua to the alleged financial side of the operation. According to the DCI, he served as a key link between the alleged execution team and the person who contracted them.
Investigators further allege that Mbugua acted as a paymaster, moving money used to finance logistics and facilitate the movement of the alleged hit team.
The latest arrests add a new layer to a case that has already attracted significant public attention, particularly after investigators began identifying alleged civilian and police links to the killing.
The DCI also rejected claims that suspects connected to the murder had been arrested and secretly released or that security officials had facilitated their escape.
The agency said the allegations were false and amounted to attempts to undermine the investigation.
With the two suspects in Uganda awaiting transfer and Gathoni in Kenyan custody, detectives are expected to interrogate them as they work to establish the full chain of events surrounding Dr Mutiso’s killing.
The DCI said the suspects would be processed and arraigned in court once brought together in Kenya.
“Flight delayed the file. It did not close it,” the agency said, signalling that the cross-border movement of suspects had not stopped investigators from pursuing the case.