Ahead of the handover of IAF pilot Abhinandan Varthaman by Pakistan through Wagah Border on Friday afternoon, the security has been beefed up across the nation. <br />Earlier, Pakistan Prime Minister Imran Khan on Thursday said that they would release captive Indian Air Force pilot on Friday as a 'big peace gesture'. Khan's surprise announcement to a joint session of Parliament, that Varthaman will be released Friday, was greeted by loud thumping of desks by the lawmakers.