(1) Every citizen of Nigeria is entitled to move freely throughout Nigeria and to reside in any part thereof, and no citizen of Nigeria shall be expelled from Nigeria or refused entry thereby or exit therefrom.
(2) Nothing in subsection (1) of this section shall invalidate any law that is reasonably justifiable in a democratic society-
(a) imposing restrictions on the residence or movement of any person who has committed or is reasonably suspected to have committed a criminal offence in order to prevent him from leaving Nigeria; or
(b) providing for the removal of any person from Nigeria to any other country to:-
(i) be tried outside Nigeria for any criminal offence, or
(ii) undergo imprisonment outside Nigeria in execution of the sentence of a court of law in respect of a criminal offence of which he has been found guilty:
Provided that there is reciprocal agreement between Nigeria and such other country in relation to such matter.
Section 41 of the Constitution of the Federal Republic of Nigeria