At least 100 people are held briefly in a crackdown that spreads beyond the mosque.
The teenager was shot dead by police after he ran a red light, they say.
News of their arrest follows a deadly gunfight along the Chinese border in Vietnam's Quang Ninh province.
Seven men have been held for 20 months in connection with the murder of a Han Chinese prostitute.
Two pillion riders suffer gunshot wounds in a violent police response.
His former teacher says he was only a bystander in the Urumqi violence.
They suspect local officials of working in collusion with Chinese firms.
Beijing targets even the most peaceful of Uyghur advocates, she says.
The three men are believed to have been escorted by police to another city in Xinjiang.
The wife of Ilham Tohti says her young family now faces economic hardship.
Relatives carry the seriously wounded young man to protest in front of government offices.
A source claims the family is unable to follow briefings conducted in Mandarin.
His frank comments on religious controls and unemployment bring praise from Uyghur netizens.
A Uyghur is accused of killing the officer as he emerged from a meeting.
If deported home, the Uyghurs face 'credible threats of torture,' a human rights group says.
China is pushing for their deportation home where they could be punished.
Uyghurs who have made a life in southwestern China are uprooted and ordered back to Xinjiang.
Police are warning hotels in some areas not to admit 'guests from Xinjiang.'
Sources suspect they had been 'trapped' in Yunnan province after failing to flee the country.
The crowd is aggravated by dispute over confiscated motorcycles.
A rights group meanwhile warns that Ilham Tohti remains at high risk of torture and ill-treatment as long as he is in custody.
But little is known about the fate of his two business partners.
Chinese authorities inform their families of the charges against them.
Ilham Tohti could face a life sentence, but his lawyer says there is little evidence to support the charges.
Tohti's family has yet to receive any official documents regarding his detention or the charges against him.
A Uyghur exile group blames the latest incident on China’s ‘violent’ policies.
He underlines his fears in a lengthy statement months before he was held on Jan. 15.
His mother breaks her silence over his whereabouts after more than three years.
Violence rocks a township in Aksu prefecture.
Family members receive the first official news since his arrest five months ago.