According to the Edhi Foundation, 28-year-old Muhammad Naeem of Uttar Pradesh was arrested by police near the Lahore railway station in April 2009 for not having "valid travel documents and a Pakistani visa."
After his trial, he was handed down a prison sentence which he was serving at Kot Lakhpat jail.
Edhi Foundation official Muhammad Younus told PTI that Naeem died following a prolonged illness.
"The body was kept in a mortuary as 'imanat' (liability) but it was not claimed by anyone from India despite several reminders to the Indian High Commission," Younus claimed.
Naeem's body had been "temporarily" buried in Miani Sahib graveyard because it had decomposed, he said.
If anyone came forward to claim the body, it could be handed over to the claimant, the NGO said.
Published 15 December 2010, 12:31 IST