Authorities have fired an official in central China after city inspectors beat to death a man who filmed their confrontation with villagers, China's Xinhua news agency reports.

The killing has sparked outrage in China, with thousands expressing outrage in Chinese Internet chat rooms, often the only outlet for public criticism of the government.

The incident has also alarmed advocates of press freedom, who say municipal authorities had no right to attack a man for simply filming them.

Police have detained 24 municipal inspectors and are investigating more than 100 in the death of Wei Wenhua, a 41-year-old construction company executive, Xinhua reported on Friday.

The swift action by officials reflects concerns that the incident could spark larger protests against authorities, whose heavy-handed approach often arouses resentment.

On Monday Wei happened on a confrontation in the central Chinese province of Hubei between city inspectors and villagers protesting over the dumping of waste near their homes.

A scuffle developed when residents tried to prevent trucks from unloading the rubbish, Xinhua said.

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