How can I sell my mothers property since my parents are not alive

1) My mother purchased a plot as "power of attorney" holder of the seller in 1995. 2) The sale deed was registered in sub-registrar office of GDA. 3) My father build a house in 1996 and since then we are living and paying house tax, water tax, electricity bill etc. 4) My mother died in 2004 and father died in 2010 leaving a registered will. 5) I am a Hindu. How can I sell this property now since my parents are not alive.