The ruling ‘Mahagathbandhan’ in Bihar on Monday cried foul over reports of a corruption case being reopened against Lalu Prasad, the founding president of the RJD which helms the alliance. The central agency which is often accused, by parties opposed to the BJP, of having become a political instrument in the hands of the party ruling the Centre, has reopened inquiry into a case against Prasad which it had closed last year.