In the year 1972 a residential plot of 200 sq yards was purchased in my mother's name in Loni area of Gaziabad Distt (U.P). As no one knew about this property so no one took possession/looked after the same. Now we have come to know that the name of colony does not exists and some local people told us that colony was sold to another party and may be the name also be changed of that particular colony. But we have original registry of the said plot in my mother's name. Please advise what steps we should take so that we can take possession of the plot. It is important to mention here that mutation was not done of this plot.