The station, which has detention cells and an office, is said to have existed for more than six months.
It is not clear why Mr Letting, who was a close ally of a former MP, took it upon himself to establish the station.
Police in Uasin Gishu are on the spot after an Eldoret controversial-trader-cum-political-activist established a police station and branded it with police colours without their knowledge and the approval of the Inspector-General.
Mr Collins Letting, a controversial trader who had a run-in with the law, has shocked residents of Chebarus area, near Cengalo Forest, and along Lessos-Kapsabet road, for establishing the illegal patrol base.