China has sentenced a Tibetan youth to two years in prison for storing images of Tibet self-immolations and the banned Tibetan national flag, and other photos showing Chinese atrocities on Tibetans on his mobile phone. Ngawang Topden, 20, a student of thangka painting from Jomda region of eastern Tibet was arrested on October 12 last year in Lhasa where he had been staying with all required legal documents.