10 of the Act reads as under: "Notwithstanding anything contained in this Act, any person (including a foreigner) in respect of whom an order of detention is made under this Act at any time before the 31st day of July, 1990, may be detained without obtaining, in accordance with the provisions of sub clause (a) of clause (4) of article 22 of the Constitution, the opinion of an Advi sory Board for a period longer than three months but not exceeding six months from the date of his detention, where the order of detention has been made against such person with a view to preventing him from engaging in illicit traffic in narcotic drugs and psychotropic substances, and the Central Government or any officer of the Central Govern ment, not below the rank of an Additional Secretary to that Government, specially empowered for the 280 purposes of this section by that Government, specially empowered for the purposes of this section by that Govern ment, is satisfied that such person engages or is likely to engage in illicit traffic in narcotic drugs and psychotropic substances into, out of, through or within any area highly vulnerable to such illicit traffic and makes a declaration to that effect within five weeks of the detention of such person.