Indian rights activists say hundreds of people have peacefully occupied the construction site of a massive hydroelectric dam in the Amazonian state of Para in Brazil.
The Catholic Church-backed Indian Missionary Council says on its website that more than 600 Indians, fishermen and river dwellers are demanding that work on the Belo Monte hydroelectric dam be stopped.
The $11 billion, 11,000-megawatt dam would be the world's third largest when completed on the Xingu River feeding the Amazon.
The Inter-American Commission on Human Rights and other critics say the dam will displace thousands of Indians and cause environmental damage. The commission has urged the Brazilian government to halt work on the dam.