Pakistan's former Prime Minister Nawaz Sharif's mother Begum Shamim Akhtar passed away in her early 90s in London on Sunday. Begum Akhtar wasn't well for the past few months, local reports said. "My condolences and prayers go to the Sharif family on the passing of Mian Nawaz and Mian Shehbaz Sharif's mother," Pakistan PM Imran Khan tweeted.