Was Painkiller Overdose The Cause Of Prince,s Death?

The death of Prince Rogers Nelson  AKA "Prince" still remains a sad loss to the music world but what is left to been heard is the cause of his death, speculations have it that prince died of pain killer over dose, not yet confirmed
though.

Reports linked the death of  prince to overdose of some powerful narcotics which he took as a stop gap for his persistent hip problem, its was reported that prince had undergone a hip surgery back in 2010, but a recurrent situation later on saw him needing a corrective surgery which he refused on grounds of the fact that his religion opposes blood transfusion.

An autopsy to ascertain he exact cause of his death would be conducted by Friday