The family of Ndiang'ui Kinyagia, a 35-year-old IT expert, is in distress following his disappearance on Saturday.
Kinyagia, known for his online presence through his X account Daguin Dd, had been mobilising support for Gen Z protest anniversary.
His family alleges he was abducted by officers believed to be from the Directorate of Criminal Investigations (DCI), and are demanding answers on his whereabouts and well-being.
His mother, Margaret Rukwaro, said Ndiang'ui was last heard to them at 10am on Saturday. "I called him to check on how he was doing.