Bollywood superstar Salman Khan has launched an online campaign for Sarabjit Singh, an Indian on death row in Pakistan. He is urging people to sign a petition that he plans to give to the Pakistan government in a bid to free Sarabjit.

"For over 20 years, Sarabjit Singh is in a Pakistan prison for a crime he did not commit. He and his family have suffered for too long. Please sign this petition to appeal to the Pakistan government that he be freed and united with his family in Punjab, " Salman posted on beinghumanonline.com.

Being Human, owned by the star, is an organisation that helps in spreading education and healthcare to under-privileged.

The 46-year-old launched the online petition Friday.

On Thursday, Pakistan released Indian prisoner Surjeet Singh. Earlier, reports had said that Pakistan was to free Sarabjit Singh, but later Islamabad clarified that it was another Indian prisoner named Surjeet Singh, and not Sarabjit Singh.