Beijing, May 24 -- : As the UN's long-awaited trip got underway, the rights group urged the United Nations High Commissioner for Human Rights to address crimes against humanity and gross human rights violations when her team visits China's Xinjiang Uyghur Autonomous Region this week.

"We will be discussing sensitive, important human rights issues, and I hope this visit will help us work together to advance human rights in China and globally," said UN rights chief Michelle Bachelet.

A team led by Bachelet will spend six days in China including Xinjiang, where Amnesty International has documented systematic arbitrary imprisonment, torture and persecution of Uyghurs, Kazakhs and other predominantly Muslim ethnic minorities.

"Michelle Bachel...