7.As rightly contended by the learned Senior Counsel for the petitioner, the impugned order was passed based on the statements recorded from the co-employees of the petitioner on 19.04.1987. Disciplinary proceedings was initiated under Rule 17(a) of the Tamil Nadu Civil Services (Discipline and Appeal) Rules. It is a different matter if the first respondent passed the punishment order based on the explanation of the petitioner. However, the first respondent relied on certain statements of the co-employees, which were obtained behind the back of the petitioner. In that event, the first respondent ought to have conducted the enquiry, even though it is a proceedings under Rule 17(a) of the Tamil Nadu Civil Services (Discipline and Appeal) Rules. In my view, when the first respondent relied on certain statements of the witnesses, those persons should have been examined in the presence of the petitioner and he should have been given opportunity to cross examine them. Relying the statements of the persons, without subjecting them to cross examination, is violative of principles of natural justice. Hence, the impugned order is liable to be quashed and accordingly, the same is quashed.