of Sarabjit. He also started an online petition from his NGO Being Human in support of his release. Protests In April 2008, a group of Pakistani students organised a march seeking withdrawal of all official moves to pardon Singh. Death Singh was attacked on 26 April 2013 at about 4:30 pm in the Central Jail Lahore (Kot Lakhpat jail), by other prisoners, with bricks, sharp metal sheets, iron rods and blades. He was admitted to Jinnah Hospital, Lahore in critical condition with severe head injuries, in a coma, with a broken backbone. He was placed on a ventilator. The exact circumstances of the attack and the number of attackers have been differently reported. Some sources have indicated that there were six assailants whereas others have indicated two. Some indicated that he was assaulted in his cell; others indicated that the attack took place when he was brought out of his cell for an hour-long break. According to his sister, the attack on Singh was pre-planned and the jail authorities were involved. His wife, sister and two daughters were allowed to visit him in the hospital. Singh had been threatened after Afzal Guru was executed in India in February 2013 over his role in the 2001 Indian Parliament attack case. Some sources had indicated that the attack was planned after Guru's execution. The Indian prime minister, Manmohan Singh, termed the attack as "very sad". On 29 April 2013, India appealed to Pakistan to release Sarabjit Singh on humanitarian grounds or at least allow him to be provided medical treatment in India, but these were repeatedly rejected by Pakistan. Appeals by lawyers were also filed with the Supreme Court of Pakistan to send Singh for medical treatment to the UK or outside Pakistan to save his life. On 1 May 2013 he was declared brain dead by doctors at Jinnah Hospital, but Pakistani authorities refused to give a statement. His sister and family returned to India. His sister said that the doctors attending to her brother were not being honest with them and she suspected foul play. She also remarked to having seen ink on his left thumb and that the Pakistani doctors had been evading questions. On 2 May 2013, he was reported to have died at 12:45 am local time in Lahore, when he was removed from the ventilator support after his condition worsened towards the middle of the night.