The term terrorist refers to any natural person who:
(i) commits, or attempts to commit, terrorist acts by any means, directly or indirectly, unlawfully and wilfully;
(ii) participates as an accomplice in terrorist acts;
(iii) organises or directs others to commit terrorist acts; or
(iv) contributes to the commission of terrorist acts by a group of persons acting with a common purpose where the contribution is made intentionally and with the aim of furthering the terrorist act or with the knowledge of the intention of the group to commit a terrorist act.