a case under IPC 420 for buying a land by forgery

i have purchased a land in my vill about 20 yrs ago.just after the paperwork the seller died.a case was filed against me that i illegally bought the land as seller died before paperwork.the family of the seller has been using the land since then.WHAT ARE THE OPTIONS FOR ME ??? i am even ready to leave my rights on that land. my brothers are also party to this case with me.they may not be willing to resolve this issue..