They are told not to visit monasteries or attend religious gatherings during the Buddhist holy month of Saga Dawa.
Chinese authorities fear the spread of 'separatist' sentiment inspired by exiled spiritual leader the Dalai Lama.
Already partially fenced for farming, the grazing land is now being taken for development, a local source says.
The representative of the Trump administration to India calls the spiritual leader 'inspirational,' voices hope he may soon visit the US.
Police have now blocked communications in the area to keep more news from getting out.
Woechung Gyatso was taken into custody after participating in a Chinese-led workshop on laws regulating internet use.
Meetings with a Chinese embassy official in Poland and a journalist in Sweden were unconnected with intelligence work, he says.
Local Tibetans lose land they have farmed for generations, with compensation paid at below-market rates.
Lhamo Dolkar, 60, came under suspicion after she visited a political prisoner in jail some six years before her detention.
The suspect is believed to have been paid by Chinese agents for information about the diaspora.
It was Labrang monk Jinpa Gyatso's second period of incommunicado detention in less than a month.
Listed offenses include environmental activism and the promotion of Tibet's national culture and language.
Lobsang Sangye was sentenced in a closed trial after seven months of incommunicado detention.
Police take a village leader into custody after he refuses to sign his approval for the project, a local source says.
A former leader of Tibetan student protests, he was sentenced for his writings criticizing Chinese policies in Tibetan areas.
The monk, named Lodroe, had joined in protests in Lhasa in March 2008 challenging Beijing's rule in Tibet.
The Tibetan father of two daughters burns himself to death in protest against Chinese rule in the region.
They are held and questioned for hours before being put on a plane back to South Korea.
New draperies have been hung behind the temple's central image, suggesting hidden damage, sources say.
Tsegon Gyal had published a blog post criticizing Beijing's approach to enforcing 'ethnic unity' in Tibetan areas.
No casualties are reported, but the extent of damage to the compound's ancient structures and religious treasures is still unclear.
Tashi Choeying was visiting his family in Sichuan when he was arrested and vanished into police custody.
Geshe Tsewang Namgyal had taken part in protests six years ago in Sichuan calling for Tibetan freedom.
Lodroe Gyatso had been taken into custody just minutes after launching a solo protest in front of Lhasa's Potala Palace.
Gartze Jigme is now banned from public speaking and may not return to his monastery for one year.
Two suspected Indian members of the Bangladeshi militant group have been arrested, police say.
Ngawang Tsomo was subjected to torture and poor conditions during her seven-year sentence.
Lodroe Gyatso is believed to have shouted political slogans in front of Lhasa's Potala Palace, sources say.
The conference is a further bid by Tibetans to protect their culture.
Sources say confiscated passports have not been reissued, despite a an earlier pledge by authorities.