The U.S. Treasury Department said on Friday it imposed sanctions on Wu Yingjie, the Chinese Communist Party chief in Tibet between 2016 and 2021, and Zhang Hongbo, a senior public security official in the region.

China has been accused of harsh policies to quell ethnic dissent and control religious activities in Tibet -- accusations that China rejects.

(Reporting by Martin Quin Pollard; writing by Ryan Woo; Editing by Kim Coghill)