Japan is to ban government use of telecoms products made by Chinese tech giants Huawei and ZTE on concerns about cybersecurity, reports said.
The government plans to revise internal procurement rules to exclude products made by Huawei and ZTE as early as Monday, Japanese newspaper Yomiuri Shimbun reported. Tokyo-headquartered Jiji Press agency also reported the expected move.
The ban comes after a US request to allies to avoid products made by the two companies over fears they contain viruses used for cyberattacks, the Yomiuri said, citing unnamed government sources.
Domestic products that use parts made by the two Chinese firms will also be excluded from government use, it said.
The report said the government was not expected to name the companies directly, so as to avoid angering China.
Asked about the report, top government spokesman Yoshihide Suga declined to comment, adding Japan was "closely cooperating with the US" on cybersecurity issues.
China said it was "seriously concerned" about the reports, adding that Huawei and ZTE have been operating legally in Japan for a long time.
"We hope that Japan will provide a level playing field for Chinese companies to operate in Japan," Chinese foreign ministry spokesman Geng Shuang told a regular press briefing.
"Do not do anything that would undermine mutual trust and cooperation."
The reports come after the arrest of a top Huawei executive in Canada infuriated China, sending global markets wobbling on fears of intensifying tensions between Beijing and Washington.
The detention of Meng Wanzhou, Huawei's chief financial officer, comes after US authorities reportedly launched an investigation into suspected Iran sanctions violations by Huawei.
The firm was already under scrutiny by US intelligence officials who have deemed the company a national security threat.
Huawei's affordable smartphones have made strong inroads in the developing world, but the company has faced repeated setbacks in major Western economies over security concerns.
Huawei has been under scrutiny in Washington for more than a decade, and is facing bans for 5G contracts in Australia and New Zealand, both Pacific allies of the US.