Chinese state media are reporting that police in the Xinjiang region have detained six people suspected in a bomb-making operation.
The official Xinhua news agency says the suspects made more than 20 explosive devices and were planning to carry out terrorist attacks.
The report quotes unnamed anti-terrorist sources who say the group made explosives after ethnically-motivated riots broke out in Xinjiang's capital, Urumqi, in early July. The riots left nearly 200 people dead.
The report says the devices and bomb-making tools were seized in raids in the suburbs of Aksu city in Xinjiang. They did not give a specific date, or identify the ethnicity of the suspects.
Xinjiang is home to China's Uighurs, a mostly Muslim ethnic minority that complains of persecution by the Han Chinese majority. Tension between the groups has spiraled into violent confrontations in recent months.