The Registrar Supreme Court of Pakistan has entertained constitutional petition on Monday, filed by PML-N chief Nawaz Sharif, seeking investigation into 'Memogate'. The petition was filed in SC on November 23 through which petitioner PML-N chief Nawaz Sharif made top civilian, diplomatic and military leadership respondents with a plea to the court to summon them in person to explain the detestable, "despicable and the treacherous memorandum."