U.N. rights boss decries violations in China's Xinjiang

"Activists, lawyers and human rights defenders - as well as some foreign nationals - face arbitrary criminal charges, detention or unfair trials," Bachelet told the Human Rights Council in Geneva.

More than 600 people in Hong Kong are being investigated for taking part in protests, some under the new national security law imposed by mainland China on the former British colony, she said.

Reports about violations including arbitrary detention, ill-treatment, sexual violence and forced labor in China's Xinjiang region need independent assessment, she added.