Police hold two, including a former official and a police officer.
Sharing news during 2008 protests lands Tibetans in jail.
Teachers lose their jobs after Tibetan student demonstrations.
Teens are detained after defying tight Chinese security measures.
Questions arise over the stability of the Dalai Lama’s traditional home.
Two years after deadly riots against Chinese rule, Tibetans report tight security.
China’s heavy-handed presence remains as a key anniversary nears.
Rare court papers also show jailing of a Tibetan monk.