Detectives have arrested a man in Narok over the murder of 22-year-old Serena Tonkei, whose body was found in a pool of blood inside her rented room in Baraka, Nakuru County. Police recovered a blood-stained knife and belongings linked to a suspected boyfriend, who allegedly fled to Narok. Meanwhile, police in Nyamira are investigating the death of 20-year-old Martin Nyambane Kerosi, found behind Omwoyo Plaza. No arrests had been made.