Section 214.(1) of the 1999 Nigerian constitution provides that:
There shall be a police force for Nigeria, which shall be known as the Nigeria Police Force, and subject to the provisions of this section no other police force shall be established for the Federation or any part thereof.
(2) Subject to the provisions of this Constitution -
(a) the Nigeria Police Force shall be organised and administered in accordance with such provisions as may be prescribed by an act of the National Assembly;
(b) the members of the Nigeria Police shall have such powers and duties as maybe conferred upon them by law;
(c) the National Assembly may make provisions for branches of the Nigeria Police Force forming part of the armed forces of the Federation or for the protection of harbours, waterways, railways and air fields.
The Police Act is an act to make provision for the organisation, discipline, powers and duties of the police, the special constabulary and the traffic wardens. [1967 No. 41.] [1st April, 1943].