The US State Department has renewed its warning for US citizens travelling in China to exercise increased caution due to "arbitrary enforcement of local laws" amid heightened diplomatic tensions over the arrest in Canada of a Chinese technology company executive.
The updated travel advisory maintains the warning at "Level 2" but also warns about extra security checks and increased police presence in the Xinjiang Uighur and Tibet Autonomous Regions.
The advisory follows the detentions by Chinese authorities in December of Canadians Michael Kovrig, a former diplomat and an adviser with the International Crisis Group (ICG) think-tank, and businessman Michael Spavor.
China says both men were suspected of endangering state security.
Tensions with China increased after Canadian police arrested Huawei Technologies Co Ltd's chief financial officer, Meng Wanzhou, on December 1 in Vancouver at the request of the United States.
US prosecutors have accused her of misleading banks about transactions linked to Iran, putting the banks at risk of violating US sanctions.
Earlier on Thursday, China's top prosecutor said the two Canadians had "without a doubt" violated the law.
The latest US advisory also warns about China's use of "exit bans" that would prohibit US citizens from leaving the country, sometimes keeping them in China for years.
Chinese Foreign Ministry spokesman Lu Kang told a regular news briefing in Beijing on Friday that China always welcomes foreigners, including Americans, but expects them to respect and abide by Chinese law.
"The US side's issuance of this travel advisory frankly does not hold water," Lu said.
