Dr Victoria Mutiso in a past photoTwo suspects have been arrested as detectives intensify investigations into the execution-style killing of renowned clinical psychologist and mental health researcher Dr Victoria Nthunya Mutiso, who was gunned down in a brazen attack in Nairobi.
The two suspects, a woman and her son, were arrested on Thursday and are being interrogated as investigators piece together the motive behind the shooting that has sent shockwaves through Kenya's medical and research community.
Police believe Dr Mutiso was the target of a carefully planned assassination after she was ambushed moments after arriving at the Africa Institute of Mental and Brain Health in Upper Hill on Wednesday morning.
She had requested a taxi from Tanga Heights Apartments on Bamboo Lane off Riara Road to the institute's offices at Mawensi Gardens off Matumbato Road.
According to the taxi driver, the journey turned deadly when a black Toyota Prado partially blocked the road, forcing him to slow down. Seconds later, a gunman armed with a pistol approached the rear left side of the taxi, where Dr Mutiso was seated, and opened fire before fleeing.
Investigators say the taxi had been intercepted by a four-wheel-drive vehicle before two gunmen riding on a motorcycle carried out the close-range attack.
Dr Mutiso suffered critical gunshot wounds and was rushed to hospital, where she was pronounced dead.
Preliminary investigations indicate the attackers had trailed her from her home near the Junction area in Nairobi's Kilimani neighbourhood before striking.
Detectives have described the killing as a targeted murder and say they are pursuing crucial leads. Crime scene investigators recovered a spent cartridge, which has been submitted for ballistic analysis.
Police also revealed that Dr Mutiso had previously reported threats to her life at Kilimani Police Station after armed men on a motorcycle allegedly pointed a gun at her while she was caught in traffic. That case was still under investigation when she was killed.
Investigators are now examining whether the shooting is linked to another case reported along Magadi Road last year. They are also looking into reports of a family property dispute, which they believe could be among the possible motives behind the killing.
Another team of detectives visited Dr Mutiso's home on Thursday to interview family members as investigations intensified.
Dr Mutiso, a mother of two, was due to solemnise her marriage in just a week's time.
She was the second wife of a prominent Kenyan psychiatrist and University of Nairobi Professor of Psychiatry.
Beyond her personal life, Dr Mutiso was widely respected in Kenya's mental health sector, serving as Head of Research at the Africa Mental Health Research and Training Foundation (AMHRTF).
Her work focused on youth mental health, substance abuse and integrating mental health services into community healthcare.
She also specialised in child and adolescent mental health, developing culturally appropriate interventions aimed at improving mental well-being in underserved urban informal settlements and rural communities.
Throughout her career, Dr Mutiso led and co-led numerous local and international research projects on mental illness, neurological disorders and substance abuse.
She was also a co-lead of the NIHR Global Health Research Group's HOPE project on homelessness and severe mental illness in Africa and authored numerous publications that made a lasting contribution to mental health research in Kenya.
