And four prisoners convicted in last year’s controversial Holy Land Foundation terror trial have been moved to secretive prison units known as Communication Management Units, or CMUs. The units are designed to severely restrict prisoner communication with family members, the media and the outside world. The four were convicted on charges of supporting the Palestinian group Hamas through the Holy Land Foundation, once the nation’s largest Muslim charity. They were never accused of supporting violence and were convicted for funding charities that aided needy Palestinians. The US State Department had also funded the same groups. The government’s case relied on Israeli intelligence as well as disputed documents and electronic surveillance gathered by the FBI over a span of fifteen years.