The National Accountability Bureau (NAB) has arrested former Prime Minister Shahid Khaqan Abbasi in Lahore on Thursday. The premier had written a letter to the anti-corruption watchdog and requested to give some time to appear before it. “I received the NAB notice yesterday and it was not possible for me to appear before the bureau on such a short notice’’. “Shahid Khaqan Abbasi sought three-day time from the NAB Rawalpindi for appearance.” The former prime minister is facing charges of corruption and awarding an LNG import contract at exorbitant rates in 2015, which caused a big loss to the national exchequer. Sources said that he had granted a tender worth Rs220 bn to a firm in which he himself was a shareholder. The Pakistan Muslim-League (Nawaz) leader earlier appeared three times before of the NAB during the inquiry.