Appointment of Inspector-General and control of Nigeria Police Force
Section 215(1)(b) · 1999 Constitution (2004 edition)
What Constitution says
(b) a Commissioner of Police for each state of the Federation who shall be appointed by the Police Service Commission.
This is the 1999 Constitution as published in 2004. Later amendments aren't included yet, so a section may have changed since.
Original source
Official Gazette · CFRN 1999 official PDF · printed page 96. Original document
Release: draft-c8d50d87fae9. Source scope, review and corrections