Section 21: Interpretation.

(1) In this Act, unless the context otherwise requires, the following expressions have the meanings hereby assigned to them respectively, that is to say-
"Attorney-General" means the Attorney-General of the Federation;
"certificate of conviction" includes any judicial document stating the fact of conviction;
"court" includes a tribunal established by an Act or any other enactment;
"extradition agreement" has the meaning assigned by section 1 of this Act;
"fugitive criminal" or "fugitive" means (without prejudice to section 8(2) of this Act)-
(a) any person accused of extradition offence committed within the jurisdiction of a country other than Nigeria; or
(b) any person, who, having been convicted of an extradition offence in a country other than Nigeria, is unlawfully at large before the expiration of a sentence imposed on him for that offence,
being in either case a person who is, or is suspected of being, in Nigeria;
"magistrate" means a chief magistrate, a senior magistrate or a magistrate grade I or grade II;
"territory" means a State or the Federal Capital Territory;
"warrant" includes any judicial document authorising the arrest of a person accused or convicted of an offence.
(2) References in this Act to a person being unlawfully at large includes references to a person being at large in breach of a condition of a licence to be at large.
(3) For the purposes of this Act-
(a) every colony, dependent territory and constituent part of any country to which this Act applies by virtue of section 1 thereof; and
(b) every vessel and aircraft of any country, whether within the Commonwealth or not,
shall be treated as being within the jurisdiction of, and as forming part of, that country.