The World Uyghur Congress consists mainly of Uyghurs living in exile and advocates for the rights of those who remain in the Xinjiang region in western China, where upwards of one million people have been held in internment camps.

About 200 delegates from 25 countries gathered in Prague from Nov. 12-14 to elect the organization’s new leadership and hold discussions with politicians, academics and civil society representatives from around the world. The Prague Marriott Hotel declined to host the conference.

Melissa Froehlich Flood, Marriott’s senior vice president for global corporate communications, told Axios the hotel would be “contacting the group to apologize, as the hotel’s response was not consistent with our policies.”