Forged documents of land

Hello, As we have single 3000 ft of open plot. The neighbour staying near our plot wants to grabbed it with forged documents. They gave bribe to village talati and village sarpanch for giving them two different house tax parchi of two years on their name. They given two receipt of house tax mentioning house numbers e.g 1/24 and 2/25 which shows that there are two plots. But every body has 3000 ft single plot staying near our plot then how can they make two plots of single one. The gram panchayat sarpanch gave them panchayat dakhila on their name stating fourth sided location (hadd disha). We have original deed and never applied for sub plotting, never sold to any one..Now they filled suit in the court with these forged documents against us.. * Now we want to know that can we do RTI against these documents ? * What informations can we demand in RTI ? * Which points should be considered and which points should not include in RTI ? As we are not from lawyers field so your help and guidance could be useful for us to get our plot back. As my father expired last year in this tension and these are all happened by land mafia. Kindly do the needful and guide please.