Interior CS Fred Matiang'i has ordered the arrest of an officer who gunned down his colleague in Kiambu on Thursday.

Chief inspector Duncan Maina of DCI headquarters fatally shot Evanson Kipngetich Busienei as the latter was walking back to Thindigua police post.

A police report said that Maina alleged Busienei, in the company of another man, stopped him and demanded he be given the vehicle he was driving. He said that the vehicle bearing reg no KAU 429U belonged to the DCI.

The police report read:

After warning him he would shoot, Busienei told him to do so, while advancing towards him, prompting him to stop the vehicle and draw his pistol and shoot at him at close range. Maina then alighted and shot continuously at Busienei when he further advanced towards him. He then shot towards the other man accompanying Busienei, but he took cover behind near a construction site. Maina further shot towards a short chase Land Rover reg KBY 037Z, where four other men were standing. They escaped. He reported the matter at Thindigua police post - OB 2/23/11/2018 at 12.32am. The body was found with two exit wounds on the back and two gun wounds at the chin. The Land Rover was shot at once and the rear screen smashed as its driver drove off to report at Kiambu police station. The body was taken to Kenyatta University mortuary pending an autopsy. Four cartridges of 9mm were collected at the scene.

None of the other five people at the scene was injured. The statement added:

The DCI officer has since been disarmed.

Speaking in Nairobi on Friday, Matiang'i said he had talked with Inspector General Joseph Boinnet over the issue. He said:

Something is not adding up.