Islamabad: Federal Minister for Kashmir Affairs and Gilgit-Baltistan Engineer Amir Muqam quips PTI chief's refusal to undergo polygraph test."He who used to say "I fear no one," is now afraid of the lie-detecting machine," Muqam said in a statement.Muqam said that he (Imram Khan) used to say "I am not scared of anyone," is now scared of the lie-detecting machine."If he (Khan) is not lying, why is he afraid of the lie-detecting machine?" he questioned.He falsely claimed "I will die but not go to the IMF" and how can he confront the polygraph machine?"Whether he refused the lie-detecting machine's challenge, since the machine does not say "good to see you," the minister questioned.