JUDGMENT : The present writ petition has been preferred for quashing order dated 15.03.1993 whereby the petitioner has been ordered to be compulsorily retired. 2. Learned counsel for the respondents-Railway raising the preliminary objection on the issue of maintainability of writ petition submits that the same impugned order has already been challenged by the petitioner by filing O.A. No. 124 of 2006 before the Central Administrative Tribunal, Calcutta Bench, Calcutta and the said Bench vide order dated 23.11.2007, which has been annexed as Annexure R/3 to the counter affidavit, has dismissed the same being devoid of any merit. Hence, the impugned order is hit by principles of res judicata and only appeal lies before the appropriate forum. 3. Considering the above facts, no case of interference is made out. The writ petition is dismissed.