(2) Without prejudice to the generality of the foregoing power under sub section (1 ), if the Chief Settlement Commissioner is satisfied that any order for payment of compensation to a displaced person or any lease or 'allotment granted to such a person has been obtained by him by means of fraud, false representation or concealment of any material fact, then, notwithstanding anything contained in this Act, the Chief Settlement Commissioner may pass an order directing that no compensation shall be paid to such a person or reducing the amount of compensation to be paid to him, or as the case may be, canceling the lease or 'allotment granted to him; 'and if it is found that a displaced person has been paid compensation which is not payable to him, or which is in excess of the amount payable to him, Such amount or excess, as the case may be, may on a certificate issued by the Chief Settlement Commissioner be recovered in the same manner as an arrear of land revenue.