On Friday morning, Kenya's Directorate of Criminal Investigations released photographs of a man sitting in custody at a police station in the coastal city of Mombasa.
Wearing a Christmas t-shirt, a mask tucked under his chin, his wrists bound by handcuffs, he stares blankly up into the camera.
This man, identified as Ibrahim Rotich, is the prime suspect in the murder of Agnes Tirop, an Olympic track star who was found dead in her Iten home on Wednesday.
The 25-year-old was in a relationship with Rotich, who was arrested on Friday morning attempting to flee the country.