Chinese authorities have claimed they have arrested a spy trained in Britain.
The suspect allegedly had been stealing state secrets for the UK’s Secret Intelligence Service since at least 2015.
Beijing has confirmed the suspect is neither Chinese nor British.
China claimed the alleged suspect was the boss of a foreign consulting firm who entered China several times with orders to scope out more spies
The alleged spook is accused of conducting intelligence for Britain's MI6
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The Chinese Ministry of State Security did not provide the full details of the suspect.
However, they revealed his surname was Huang.
They claimed Huang had been trained in spy-craft in Britain and issued with "specialist spying equipment."
In a statement published on WeChat they accused the UK of recruiting Huang in 2015 and forming an "intelligence cooperation relationship".
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MI6 Chief Richard Moore said China is now a "top priority"
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The ministry said Huang, “entered China several times under instructions to use their public profile as a cover to collect China-related intelligence for Britain... and seek other personnel whom MI6 could turn.”
Huang allegedly passed 17 pieces of intelligence, including confidential state secrets, to MI6 before he was identified.
The ministry claimed it had "promptly discovered criminal evidence that Huang was engaged in espionage activities, and took criminal coercive measures in accordance with the law".
Britain's embassy in Beijing declined to comment to The Sun's request for comment.
Earlier this week, MI6 said China was now the top priority.
Spy-chief Richard Moore said: "We now devote more resources to China than anywhere else, reflecting China’s increasing global significance."
A report by parliament's Intelligence and Security Committee warned Beijing had penetrated "every sector" in the UK.
The government has previously warned Beijing could use electric cars for espionage activities and China's Huawei has been banned from its 5G mobile networks over fear of Beijing's spying.