LONDON – A man serving his sentence at a federal prison in Kentucky for attempting to aid a foreign terrorist group, will face more time, after being found guilty of assaulting his cellmate. According to the U.S. Attorney’s office for the Eastern District of Kentucky, Mufid Elfgeeh, 42, was convicted by a federal jury in London for attempted murder. Elfgeeh was convicted following a two-day trial at U.S. District Court in London. Prosecutors say…