Forged will

My elder brother(26 yrs) murdered. he died intestate(no will). legal hiers our mother his wifeand his son. but by misrepresentation of some oral will or fake written will my uncle got mutation sanctioned in his favour. this was done with the help of then patwari and tehsildaar. my mother having 1/3 share in these properties later died after 6 years. and her real will is in my favour. thus i am entitled to 1/3 share in these properties.. also fir was lodged against my uncle and his two sons.that criminal case is now in the high court. as they were aqquitted by trial court and session court. one of the reason mentioned in the order of aqquital is that no civil suit was filed by me till then. so before going to criminal revision in high court .i also filed civil suit challenging that mutation suit for permanent declaration and injunction... now my question is that how can i get my right in that properties.. the other two legalhiers of my brother his wife and son are not interested in the case as his wife remarried and her son is with her... so guide me to get my right.