"I wrote it through government as it was not appropriate on my part to write a letter to him on a personal level. I was told that letters from the embassy are dispatched once a week. I had told the foreign secretary to inform me when the letter is delivered to him, so I have received confirmation of the delivery of the letter. I expect that justice is done to him," Advani said on the sidelines of a book release ceremony. Advani wrote the letter to Gillani on April 6 and followed it up with a telephone call on Thursday, seeking clemency for Sarabjit.
President Pervez Musharraf had earlier rejected his appeal for clemency.
Pakistan's former Human Rights Minister Ansar Burney, on a recent visit tondia, rekindled hopes of Sarabjit's release, saying that Sarabjit could have been "a victim of mistaken identity".
Burney, who had played a significant role in the release of another Indian Kashmir Singh, has urged the new Pakistan Government to consider convertingarabjit's death sentence into life imprisonment on humanitarian grounds as he had spent more time than a life sentence on death row in Pakistani jails.
Sarabjit has been on death row since the Pakistan's Supreme Court rejected his petition for mercy in March 2006. He has been accused of having played a major role in serial blasts across Pakistan, which claimed at least 14 lives in 1991.