regarding money given to someone but now he refused to give back

My father has given money to one of my relative and he said he will give 2.5% interest on that every month and he said he will deposit that money in some society and promised to give money every month and issued 10 lakhs rupees cheque for that without date mentioned on that he has jwellery store and my father sent money in bank account, he has given money for 1 year by cash ,later he ran off from house and when he came he refused to give money and said he will deduct money tbat he gave earlier and return remaining amount only, and he even refuse to give proof wherr he invested money, he did same thing with 30+ people and took around 5 crores from public, is it possible to file a case or recover my money from that person.