In 1975 Vietnam was under communist control, and the UBCV was once again unwelcome in Vietnam. As a result, the UBCV facilities were seized, and documents burned. Thích Quảng Độ was active in protesting the government's actions, and after attempting to gather Buddhists from other regions in non-violent opposition, he was arrested on charges of 'anti-revolutionary activities' and 'undermining national solidarity'. He spent 20 months at the Phan Dang Luu Prison in solitary confinement in a cell approximately 2m2 in size with a hand-sized window, before he was tried and released in December 1978. Later that year he was nominated by Betty Williams and Mairead Maguire to receive the Nobel Peace Prize.