@CNNMoney October 7, 2012: 10:08 AM ET
Workers at Foxconn's plant in Zhengzhou, China, were furious after management enacted "overly strict demands" for production of Apple's(AAPL, Fortune 500) new iPhone 5, according to a report late Friday from China Labor Watch (CLW), a New York-based advocacy group that works closely with sources in China.
China's state-run news agency Xinhua also reported on the disturbance. More than 100 quality inspectors refused to go to work Friday "after one of the inspectors was allegedly assaulted by the workers, who have been dissatisfied with the new inspection standards," Xinhua said, citing an unnamed regional government spokesman in Zhengzhou.
Foxconn's Zhenghou complex employs around 190,000 people, according to CNET, which recently visited the area. Apple CEO Tim Cook made an appearance at the plant in March.
Both Xinhua and CLW cited tension over iPhone 5 quality standards as the event's catalyst.
Apple did not respond to messages from CNNMoney seeking comment.
In January 2012, Apple joined the independent labor-rights organization Fair Labor Association (FLA), which promptly began inspections of the working conditions at Foxconn's many factories.
FLA released an assessment in March that documented dozens of major labor-rights violations, including excessive overtime, unpaid wages and salaries that aren't enough to cover basic living expenses. The FLA's report said Foxconn agreed to work with the group on improvements, including enacting "full legal compliance" with Chinese work-hour laws by July 2013.
Last month, a large-scale incident involving 2,000 workers forced the temporary closure of Foxconn's Taiyuan factory. One worker at the scene termed the situation a riot, and it led to the hospitalization of about 40 people.