An administration police officer on Wednesday night shot and killed his colleague at Engineer police station in Kinangop, Nyandarua County.

According to Engineer Police Station OCPD, Mohammed Huka, the incident occurred in the wee hours of Thursday after the officers had a disagreement.

Sergeant Solomon Wainaina was pronounced dead on arrival at Kinangop hospital where he was rushed after the attack.

According to the OCPD, Justus Mwangi Ndiang’ui, using a G3 gun, pumped nine bullets into Wainaina killing him on the spot.

A police officer who witnessed the incident said the sergeant had earlier picked a quarrel with his junior Mr Mwangi over the night duty shift.

The suspect returned from the night duty, found his senior in his office and they quarreled for a second time before he shot the sergeant using a G3 Rifle.

The suspect was arrested on scene and an investigation into the incident launched.