Uighur expatriates staged protests on Tuesday outside the Chinese embassies in Turkey and Norway, denouncing violence in western China that has killed at least 156 people.
Protesters briefly scuffled with police in Ankara, and the Turkish Foreign Ministry summoned a top Chinese diplomat over the violence in China's Xinjiang region. Rioting broke out Sunday.
In Germany, police said fire bombs were thrown at the Chinese consulate in the southern German city of Munich in the early hours of Monday, causing minor damage to the facade and setting fire to a Chinese flag. A police statement said it was not immediately clear whether the incident was linked to events in Xinjiang.
The Chinese government imposed a curfew in the regional capital of Urumqi on Tuesday after mobs of Han Chinese with meat cleavers and clubs roamed the streets looking for Muslim Uighurs who had earlier beaten up people in the country's worst ethnic violence in decades.
Turkey called the Chinese Embassy's charge d'affairs to the Foreign Ministry requesting "information on the events and to convey Turkey's sensitivity and concern" over the riots, a ministry official said. Uighurs are related to Turks, and Turkey is home to a Uighur community.
The official spoke on condition of anonymity in line with rules barring government employees from speaking to journalists without prior authorization.
Outside the embassy in Ankara, several hundred Uighur and Turkish demonstrators rallied. A group of protesters tried to break through a line of Turkish police in riot gear to approach the embassy, leading to brief scuffles with police. No injuries were reported.
Demonstrators hurled eggs at the embassy building and held up banners calling for an end to Chinese aggression against Uighurs.
Some 100 protesters who gathered outside the Chinese Consulate in Istanbul set a Chinese flag on fire.
Meanwhile, about 100 ethnic Uighurs waving their national flag gathered outside China's Embassy in Oslo, demanding that China end violence and ethnic discrimination in Xinjiang.
A large police force in riot gear stood between the crowd at the main entrance to the embassy in the Norwegian capital late Tuesday afternoon.
Norwegian police warned protesters that they would be arrested if they did not move further away from the embassy compound, but the protesters refused to obey.