25. (1) When delivery of goods is not claimed or effected by the owner at the expiry of ¹[thirty days] from the date on which they are placed in the custody of the Authority, the Authority shall cause a notice to be served upon the owner requiring him to remove the goods: Provided that, where all rates and charges in respect of such goods have been duly paid, such notice shall not be served till the expiration of two months from the date on which the goods were placed in the custody of the Authority. (2) Such notice shall be published and served in the manner prescribed in sub-sections (2) and (3) of section 24, but where the owner is not known or the notice cannot be served upon him or he does not comply with the notice, the Authority may sell the goods by public auction after the expiration of ²[forty-five days] from the date on which such goods were placed in the custody of the Authority. (3) The Government may, by notification in the official Gazette, exempt any goods or class of goods from the operation of this section.