Ing Vysya Bank — Mutual Fund

Recently, I cam to know that my father had the mutual fund investment in the ING Vysya MF on 23/9/2001 and the same has been matured on 27/9/2013. I being the nominee had been contacted recently for the payment of the maturity amount. AT present, I am not in situation to know whether he is alive or not as we were not in contact with anyone since last 20 years. Neither we have death certificate nor we have their verification details. However, being nominee I am eligible to claim that money. So I need the resolution in that case.