Amnesty International says Uighur disappeared after arriving from abroad at Hong Kong airport. The human rights NGO said Abuduwaili Abudureheman had left South Korea on May 10 to visit a friend and had not been heard from since.

Hong Kong authorities described as "unfounded" the claims of the NGO which include "slander on the human rights situation" in this former British colony. China is accused of detaining more than a million Uighurs and members of other Muslim minorities in Xinjiang.