Village leaders are told to hand over lists of all vehicles and drivers in their areas.
The move follows protests by Tibetans against Chinese mining operations in their area.
One group waits for approval to move to a safer area.
The three Tibetans snatch fire extinguishers from policemen.
He was held for spreading information about a bloody crackdown by Chinese authorities.
Authorities promise 'higher-ups' will resolve the problem as security forces move in.
Chinese authorities order 'strengthened interrogation and examination' to block the spread of protests.
Resistance to forced display of loyalty follows weeks of protests in nearby Tibet Autonomous Region.
Chinese authorities detain three Tibetans over links to unrest in Driru.
The first fatalities are reported in a month long Chinese crackdown on a restive county in Tibet.
Beijing slams the move, calling it an 'attack' on China's government.
He had briefly been detained before for taking part in 2008 protests challenging Chinese rule.
China's refusal to be held accountable calls attention to rights violations, experts say.
Choje Akong Rinpoche is killed with two others in Chengdu.
He had staged a solitary protest calling for independence and the Dalai Lama's return.
Tibetans had protested the detention of a villager who challenged forced displays of loyalty to China.
They had been selected based on test scores to study in the U.S. and Japan.
Villagers reject campaign to force displays of loyalty to China.
He was imprisoned on 'separatism' charges.