Under s 2(1)(a) of the Gazetted Land (Consequential Provisions) Act [Chapter 20:28], 'lawful authority' to occupy gazetted land is strictly limited to an offer letter, a permit, or a land settlement lease. Assurances, telephone calls, or letters from government officials (including Ministers) or politicians do not constitute lawful authority. A person who remains on gazetted land after being served with a notice to vacate, without possessing one of the specified forms of lawful authority, commits an offence under s 3 of the Act, regardless of any assurances received from officials or pending investigations by the Land Commission or court proceedings challenging the gazetting.