China ordered mosques to remain closed in the city of Urumqi, in the Xinjiang region, after several days of ethnic violence between the Uighur and Han Chinese communities. More than 150 people have been killed since Sunday.
The authorities put up notices outside each mosque, warning that they would not open for Friday prayers.
Most of the city's mosques remained shut - empty apart from their caretakers.
But some - such as this one - did open, after boisterous crowds gathered at the gates.
At this mosque, prayers were held outside, without a preacher.
Despite the tense atmosphere, this Uighur youngster - outside a mosque - still had fun with a photographer on an official media tour of Urumqi.
Troops are out in force throughout Urumqi, and have surrounded Uighur neighbourhoods. But many Uighurs say they are still too frightened to leave their homes.
A small group of Uighurs started a demonstration, but were blocked by riot police with batons and stun guns.
Thousands of people - both Han Chinese and Uighurs - are reported to be trying to leave the city.
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