BEIJING - The commander of Chinese forces that shot protesters opposed to the construction of a power plant has been detained, as authorities admitted that at least three people had been killed.

The shootings, in southern China's Guangdong Province last Tuesday, were confirmed by state media yesterday.

According to Amnesty International, it is the first time Chinese police have fired on protestors since the Tiananmen Square massacre of 4 June 1989.

Villagers in Dongzhoukeng, near the coastal city of Shanwei, said hundreds of camouflage-clad members of the People's Armed Police confronted the protestors, before using automatic weapons to fire on them at around 8pm on Tuesday.

The villagers claimed the death toll was much higher than reported and said that at least 50 people were missing.

The incident is the latest in a series of increasingly bloody clashes between people living in rural areas and the authorities.

Official government figures say that 3.76m people took part in at least 74,000 protests in 2004, but many more go unrecorded.

Rising anger over land being forcibly purchased, as well as the environmental damage caused by the location of heavy industry in the countryside, has prompted rural residents to resort to direct action in an effort to protect their livelihoods.

Dongzhoukeng has been sealed off from the outside world since Tuesday night, with police preventing media and strangers from entering the village.

The villagers have been protesting over the building of a coal-fired power plant nearby since June, citing concerns over pollution, inadequate compensation for their confiscated farmland and the loss of fishing grounds.

Matters came to a head at the beginning of last week, when around 1,000 protestors blockaded a wind power plant in the neighbouring village of Shigongzhai in an effort to pressure the local government into increasing the compensation on offer for the purchase of their land.

According to the official news agency Xinhua, the blockade caused the plant to cease operations for seven hours.

On Tuesday, police moved in to arrest three leaders of the protests, named as Huang Xijun, Huang Xirang and Lin Hanru.

When the protestors tried to rescue them, the shooting started.

"In the onslaught, over 170 armed villagers used knives, steel spears, sticks, dynamite powder, bottles filled with petroleum and fishing detonators," claimed Xinhua.

"It became dark when the chaotic mob began to throw explosives at the police. Police were forced to open fire in alarm.