Claim / Compensation towards Land.

My father purchased a plot of land in Pachim Medinipur, West Bengal in the year 1950. The sale deed is duly registered with Sub Registrar, Medinipur. Later he was transferred to different places in the country and paid the property Tax (called Khajna in WB) for few years, however due to his frequent transfers across the country he could not keep track of the land till the year 2010. In the year 2011 through a RTI Inquiry some information was received from DLL&RO, Pachim Medinipur. Further, as per the records available, the land is presently been shown in the name of a WB State Government Organization. My father has passed away in the year 2015. A duly registered will in name of me is available. Kindly let may know, the process to claim land / compensation towards the above mentioned land please.