Violence broke out on 25th June 2012 in Shaxi township after a teenager was detained by local police, Zhongshan police said.
The fights were said to involve locals and workers from Sichuan province.
Authorities had taken away 20 suspects, a statement on Zhongshan city's official news portal said.
The area in southern China is home to many garment factories employing millions of migrant workers from across the country.
Read more: Migrants and locals clash in Zhongshan China: Gallery
7 and half year in jail - Final judgement for Taiwanese couple. Wang Huihuang (right) and Zhu Miaoxiu (left).
The 3rd of June 2004. Wu Bangguo (left) and Kjell Magne Bondevik (right) in Norway.
China has denied a visa for a former Norwegian prime minister to attend a religious meeting, apparently still displeased over the Nobel Peace Prize awarded to a Chinese dissident more than two years ago.
Read more: China denies visa for former Norwegian prime minister to attend religious meeting
Yellow Fog attacks Wuhan on 11th June 2012. The visibility is below 500Meter. Wuhan government denys a rumour which said Chemical Factory gas leaking is the main reason.
CNNIC releases its new China Internet Network Information Center Domain Name Registration Rules for the Implementation on the 28th of May 2012. 2 years after Go Daddy stop selling .cn domain names. This revised version will allow individuals to register a CN domain.
On its official website, CNNIC says its new rules come into force from 00:00 29th of May 2012. This is the first time, Chinese individuals have rights to buy Chinese domains.
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