A leading Kenyan mental health researcher was shot dead in broad daylight on Wednesday morning in Nairobi, in a killing that has stunned the country’s medical and research community. Dr Mutiso was widely respected in Kenya and beyond for her work in mental health research. Colleagues have described her as a passionate researcher whose work helped shape mental health programmes and informed public policy across the region. Her death has sparked grief among healthcare professionals, researchers and members of the public, many of whom have paid tribute to her contributions to mental health awareness and treatment. As investigators continue their work, police have not announced any arrests or disclosed a possible motive for the killing.