British police have previously charged three Russians, who they say are GRU military intelligence officers, with the 2018 attempt to murder former double agent Sergei Skripal with the military-grade nerve agent Novichok.

Patrushev is a former director of the Federal Security Service and is seen as a key advocate of hardline, hawkish policies within the Kremlin.

The Chinese national, surnamed Hao, was a cadre at a ministry and had gone to Japan for studies, which was where the spying recruitment occurred, the ministry says.

Coercive measures, which normally means detention, have been taken against the alleged spy, China's state security ministry says.

The official says the issue predates Joe Biden's presidency, as have Beijing's efforts to strengthen its intelligence collection infrastructure worldwide.

The White House meanwhile calls the reports inaccurate.

The searches occurred in the course of US crime investigations including the Jan 6 Capitol riots and protests after the 2020 killing of George Floyd, the court says.

The case is believed to be the most serious US security breach since more than 700,000 documents, videos and diplomatic cables appeared on the WikiLeaks website in 2010.

Jack Teixeira has been charged with unlawfully copying and transmitting classified material after being accused of leaking top secret military intelligence records online.

He also dismisses the suggestion that his reforms push is putting a strain on relations with the US.

It is the biggest such breach since the 2013 dump of National Security Agency documents by Edward Snowden and raises tough questions over the access of junior staffers to high-level secrets.

Netanyahu's overhaul plan has sparked unprecedented public anger since his coalition of hard-right and religious parties came to power late last year, and has also caused alarm among Israel's Western allies.