Cheating

Respected 
One of my friends came to me a week ago, came to me and offered a piece of land that is in his name. As he said, I was regularly demanding my money from him; lastly, he came to me and offered his land. My money was 40 lakh, and his land price is 75 lakh. We both went to see the land, and there is a one-room kitchen set already built on the land, and I asked for him for papers and documents; he said it's in the bank and will provide copies of all documents within a week. After that, we have done an agreement to sell, and I gave him 10 lakh rupees, and he said I will adjust your money in this deal. Now, after a week, he is not providing documents. Then I researched and came to know that land is government land, and he is an encroacher. He cheated me again. What I can do against him, kindly suggest.