BJP senior leader Subramaniana Swamy has faulted Punjab minister and former cricketer Navjot Singh Sidhu alleging that he is mentally unstable for his decision to go to Pakistan for attending the swearing-in ceremony of Pakistan Prime Minister-designate Imran Khan. 'I don’t think Navjot Singh Sidhu has a stable mind. If his mental balance is in place then he will not go to Pakistan', BJP MP said. Pakistan’s prime minister-elect Imran Khan had earlier invited called the former Cricketers Gavaskar, Kapil Dev and Sidhu to extend invitation to his oath-taking ceremony in Islamabad on August 18. Gavaskar and Kapil Dev have turned down the invitation where as Sidhu has accepted the invitation.