The Delhi High Court today dismissed a plea of jailed former Calcutta High Court judge C.S. Karnan challenging the constitutional validity of the Contempt of Courts Act.<br/><br/>A bench headed by acting Chief Justice Gita Mittal said that there was no merit in the writ petition. The court also rejected the submission made on behalf of Karnan that the principles of natural justice were not followed in awarding him the jail term of six months.<br/><br/>The court said that Karnan's communications, order and conduct established that he had full knowledge of the orders of the Supreme Court, proceedings as well as the materials against him.