"extradition offence" means an offence the act or omission constituting which falls within any of the descriptions set out in the Schedule and, if it took place within, or within the jurisdiction of, Bangladesh would constitute an offence" against the law of Bangladesh and also—

(i)in the case of a treaty State, an offence a person accused of which is, under the extradition treaty with that State, to be returned to or from that State; and

(ii) in the case of a foreign State not being a treaty State, an offence specified in a direction issued under section 4.