Societies, then special officer and then president sold the said plots allotted for public purpose to various persons illegally. The first respondent in W.A.(MD).No.194 to 196 of 2017 also purchased the plot illegally. Subsequently, the special officer of the said society cancelled the same on 09.01.1996. Therefore, the 2nd respondent in this writ appeal had filed appeal before the Regional Deputy Registrar under Section 90 of the Tamil Nadu Co-operative Societies Act 1983. The said appeal was allowed on 21.02.2006 in his proceedings in Tha.Vaa.Nos.325, 326 and 329/99-2000. Thereafter, the sale deed was not reconveyed and hence, the first respondent in W.A.(MD).No.194 to 196 of 2017 had filed writ of mandamus in W.P.(MD).Nos.17474 to 17476 of 2016 directing the 2nd and 3rd respondents herein to implement the above said order dated 21.02.2006. During the pendency of the writ petition, the 1st appellant had set aside the above said order dated 21.02.2006 by passing the order dated 31.03.2006. The said order has been impugned in the W.P. (MD).Nos.21706 to 21708 of 2016. The Writ Court by the impugned order dated 16.11.2016 allowed the writ petition at the admission stage without hearing the appellant. Challenging the same, the registrar, Cooperative societies (Housing), Chennai and regional Deputy registrar