Premier-in-waiting and Pakistan Tehreek-e-Insaaf Chairman Imran Khas has appeared before National Accountability Bureau (NAB) Peshawar office on Tuesday after being summoned in an ongoing inquiry against him for misusing Khyber Pakhtunkhwa government's helicopters.

According to the media source, Imran will be handed a questionnaire based on 15 questions regarding the alleged illegal use of KP govt's helicopters for a total of 74 hours causing Rs2.1 million loss to the national exchequer.

Imran Khan had been summoned by NAB on July 18 but he sought more time due to his busy schedule for campaigning for the general election.

On January 29 this year, reported circulated in the media that Imran's use of the provincial government's helicopters cause millions of rupess loss to the national treasury.