Observers call for his release, saying he followed Chinese law in promoting his mother tongue.
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.