A Tibetan writer, Tashi Rabten, is reported to have been sentenced to four years in jail in south-west China.
The International Campaign for Tibet, a US-based campaign group, says he was convicted of editing a banned magazine.
Eastern Snow Mountain grew out of literary responses to the anti-China disturbances in 2008, the anniversary of a failed uprising against Beijing.
China blamed the unrest on followers of the Dalai Lama, who it said were seeking to separate Tibet from China.
The case against Tashi Rabten was reportedly heard at Aba Intermediate People’s Court in Sichuan province, where the population is mainly ethnic Tibetan, according to a statement from the International Campaign for Tibet.
Aba is known as Ngaba by Tibetans. It has become a focus of confrontation between protesting Tibetans and Chinese security forces