Explanation.—For the purposes of this sub-section, an order for the acquisition of any immovable property (hereafter in this Explanation referred to as the order for acquisition) made under sub-section (6) of section 269F becomes final,—

(a)  in a case where the order for acquisition is not made the subject of an appeal to the Appellate Tribunal under section 269G, upon the expiry of the period during which such appeal may be presented under that section;

(b)  in a case where the order for acquisition is made the subject of an appeal to the Appellate Tribunal under section 269G,—

 (i)  if the order for acquisition is confirmed by the Appellate Tribunal and the order of the Appellate Tribunal is not made the subject of an appeal to the High Court under section 269H, upon the expiry of the period during which such appeal may be presented under that section to the High Court ;

(ii)  if the order of the Appellate Tribunal is made the subject of an appeal to the High Court under section 269H, upon the confirmation of the order for acquisition by the High Court.

(2) If any person refuses or fails to comply with the notice under sub-section (1), the competent authority or other person duly authorised by the competent authority under that sub-section may take possession of the immovable property and may, for that purpose, use such force as may be necessary.

(3) Notwithstanding anything contained in sub-section (2), the competent authority may, for the purpose of taking possession of any property referred to in sub-section (1), requisition the services of any police officer to assist him and it shall be the duty of such officer to comply with such requisition.

(4) When the possession of the immovable property is surrendered or delivered under sub-section (1) to the competent authority or a person duly authorised by him in that behalf or, as the case may be, when the possession thereof is taken under sub-section (2) or sub-section (3) by such authority or person, the property shall vest absolutely in the Central Government free from all encumbrances :

Provided that nothing in this sub-section shall operate to discharge the transferee or any other person (not being the Central Government) from liability in respect of such encumbrances and, notwithstanding anything contained in any other law, such liability may be enforced against the transferee or such other person by a suit for damages.

(5) Notwithstanding anything contained in sub-section (4) or any other law or any instrument or any agreement for the time being in force, where an order for acquisition of any immovable property, being rights of the nature referred to in clause (b) of sub-section (1) of section 269AB, in or with respect to any building or part of a building which has been constructed or which is to be constructed, has become final, then, such order shall, by its own force, have the effect of—

(a) vesting such rights in the Central Government, and

(b) placing the Central Government in the same position in relation to such rights as the person in whom such rights would have continued to vest if such order had not become final,

and the competent authority may issue such directions as he may deem fit to any person concerned for taking the necessary steps for compliance with the provisions of clauses (a) and (b).

(6) In the case of any immovable property, being rights of the nature referred to in clause (b) of sub-section (1) of section 269AB, in or with respect to any building or part of a building, the provisions of sub-sections (1), (2) and (3) shall have effect as if the references to immovable property therein were a reference to such building or, as the case may be, part of such building.