(CNN) -- Nine people have been executed in connection with ethnic riots last July that killed about 200 people in western China's Xinjiang region, the state-run China News Service reported Monday.
The executions occurred "recently," said the service, which added no more information about the executions.
Long-simmering resentment between Uyghurs and Han Chinese flared after a June melee at a toy factory in Guangdong province, leading to the July 5 riots, according to Xinhua.
A massive brawl broke out between the ethnic groups at the factory, resulting in the deaths of two Uyghurs, Xinhua said.
In a rare public display of dissatisfaction, thousands of Uyghurs -- many of whom feel they are treated as second-class citizens by the majority Han Chinese -- took to the streets in Xinjiang province, chanting and screaming.
The Uyghurs are mostly Muslims in Xinjiang province. Some Islamists refer to the region as East Turkistan.