Amazon is shutting down its Shanghai artificial intelligence lab, the Financial Times reported on Wednesday. Reuters could not immediately confirm the report. Amazon did not immediately respond to a request for comment outside regular business hours.

Amazon has closed its artificial intelligence research lab in Shanghai, citing strategic shifts and rising tensions between the U.S. and China, according to CNBC. The closure affects roles within Amazon Web Services,

Amazon’s closure of an artificial intelligence research lab in China is tied to recently announced layoffs in the company’s cloud computing unit.