Section 37: Power to prevent entry and order the removal of persons.

(1) The Minister of Internal Affairs' or other authorized officer under the laws relating to Immigration shall not grant an endorsement or other authority permitting a person to enter Nigeria if he has reasonable grounds to believe that the person has been, is or will be involved in the commission of a terrorist act.
(2) In the event of the person with respect to whom sub-section (1) applies being already in Nigeria, the Minister of Justice or other authorized officer under the laws relating to immigration shall issue an order for the arrest, detention and removal of the person from Nigeria.
(3) A person with respect to whom an order stated in sub-section (2) is made shall be extradited out of Nigeria and shall, so long as the order is in force, remain out of Nigeria.
(4) A person with respect to whom an order stated in sub-section (2) is made may be detained in such manner as may be directed by the Comptroller- General of Immigration Services or Minister ofInternal Affairs and may be placed on a vessel or aircraft leaving Nigeria.