Iran swiftly withdrew claims on the mummy that some people believed had been stolen by grave robbers from burial grounds of the Sasani dynasty, which ruled ancient Persia between the fourth and eighth centuries.
Touted as a major archaeological find until it was debunked, governments of Balochistan and Sindh had also squabbled over whose museum had first rights.
But when nobody wanted it, Edhi Foundation took in the homeless corpse.
"It has been lying in our cold storage mortuary for the last three years," Rizwan Edhi, the trust's administrator, said on Friday, adding that preserving the body had cost $8,000. "We will bury it later this month as no one is willing to claim it now."