ISLAMABAD: Hours after an interview appeared wherein Federal Minister for Climate Change Mushahidullah Khan had claimed that some high ranking officers had tried to stage a coup at the height of last year’s protests in Islamabad, Prime Minister Nawaz Sharif refuted all such notions and directed the minister to submit an explanation for his comments.According to a spokesperson of the government, Nawaz denied Mushahidullah’s claims of a tape, bearing recordings of high ranking officers detailing their plot, had ever existed.