9. (1) For unauthorised occupation of any land, building or part thereof or for any damage caused thereto, the unauthorised occupant shall be liable to pay to the Government or to the Local Authority, as the case may be, such compensation as may be assessed by the Deputy Commissioner in accordance with the rules to be made in this behalf by the Government. (2) As soon as an assessment has been made under sub-section (1), the Deputy Commissioner shall serve on the assessee, in the prescribed manner, a notice of such assessment, directing him to pay the amount so assessed within the period of thirty days from the date of service of the notice. (3) Any amount due under sub-section (2) or if the rent payable for lease in respect of any land, building or part of any building has been in arrear, such amount or rent shall be recoverable as public demand under the provisions of ¹[* * *] Public Demands Recovery Act, 1913.