The 54-year-old mother was visiting a retreat described as a “sacred space” where Westerners go to “expand consciousness”.
Brazilian police said charges were warranted against a total of 37 people,including military brass who served in the former president’s government.
Chinese involvement has drawn US warnings about Peru potentially being used by Chinese military ships as a foothold in the Americas.
One man is dead and police have blocked all access to the area where the Supreme Court,Congress and presidential palace are located.
The agreement could end more than a hundred lawsuits against the mining companies in the South American country and possibly limit legal action abroad.