The video, released by Kenya’s human rights body, showed police constable Bernard Kiriinya speaking of how officers were being rewarded with up to $65 for killing suspects instead of arresting them. Mr Kiriinya claimed that he had witnessed 58 suspects being barbarically executed by police officers.

He also alleged that the police commissioner “was pleased with the work done”, which has led to the UN investigator to call for the commissioner and the attorney general’s to be removed from office. Shortly after filming his testimony, Mr Kiriinya was shot dead. As yet no-one has been charged with his murder.