Hong Kong business tycoon Jimmy Lai has been arrested and his newspaper offices raided by police over allegations of collusion with foreign forces.
His case is the most high-profile arrest so far under the controversial security law imposed by China in June.
Mr Lai has been a prominent pro-democracy voice and a supporter of protests that erupted last year.
In February the 71-year-old, who also holds UK citizenship, was charged with illegal assembly and intimidation.
He was later granted police bail.
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Mr Lai’s arrest on Monday was first announced by Mark Simon, an executive at his media firm Next Digital.
“Jimmy Lai is being arrested for collusion with foreign powers at this time,” he said.Skip Twitter post by @ezracheungtoto
End of Twitter post by @ezracheungtoto
Scores of police were also seen entering the building of his newspaper Apple Daily, searching the offices.
Police have confirmed that seven people were arrested on Monday on suspicion of breaking the national security law, but have not yet named Mr Lai.
News agency Reuters and local media cited sources saying that other senior executives of the company were among those detained.
Who is Jimmy Lai?
The businessman is estimated to be worth more than $1bn (£766m).
Having made his initial fortune in the clothing industry, he later ventured into media and founded the newspaper Apple Daily, which is frequently critical of Hong Kong and mainland Chinese leadership.
He has also been himself an activist against Beijing’s increasingly tight grip on the Hong Kong. In 2019 he supported the reform protests and participated in the demonstrations.
When earlier this year he was charged for his involvement in those protests, Chinese state media dubbed him a “riot’s mastermind” who “has spread waves of hatred and negative information about the Chinese mainland day and night”.
On 30 June, when the security law was passed, Mr Lai told the BBC that this “spells the death knell for Hong Kong”.
He warned that Hong Kong would become as corrupt as mainland China because “without the rule of law, people who do business here will have no protection”.
In a separate interview with the AFP news agency, Mr Lai said: “I’m prepared for prison. If it comes, I will have the opportunity to read books I haven’t read. The only thing I can do is to be positive.”
What has been the reaction?
Unnamed sources within Apple Daily are cited as saying the company was “arranging lawyers” seeing the situation as “straight harassment”.
Steven Butler, Asia programme co-ordinator of the Committee to Protect Journalists, said the arrest “bears out the worst fears that Hong Kong’s national security law would be used to suppress critical pro-democracy opinion and restrict press freedom”.
“Jimmy Lai should be released at once and any charges dropped,” he said.
Wang Dan, dissident and exiled student leader of the 1989 Tiananmen Square protests, said the arrest “was expected” but “very outrageous because his two sons were also arrested, which was obviously an attempt by the authorities to destroy Lai’s will through family ties,” Wang said on social media.
“I call on the international community to take immediate action.”
Hong Kong’s most prominent pro-democracy activist Joshua Wong on Twitter also “strongly condemned” the arrest of Mr Lai.
Mr Wong was last week charged along with more than 20 others over taking part in a banned candlelight vigil on 4 June to mark the anniversary of the Tiananmen crackdown.
What is the new security law?
Hong Kong has had a high degree of autonomy since it was returned to Chinese rule in 1997, and its residents have had a far higher level of freedom of speech and media than people on the mainland.
But the law’s key provisions include that crimes of secession, subversion, terrorism and collusion with foreign forces are punishable by a maximum sentence of life in prison.
It makes it easier to punish protesters, and reduces the Hong Kong’s autonomy.
The law also gives Beijing powers to shape life in the former British colony in a way it has never had before.
Critics say it effectively curtails protest and freedom of speech – China has said the new law will return stability to the territory after a year of unrest.
Arrests and exiles
There have been two previous waves of arrests since the law was passed by Beijing on 30 June.
The first one saw several protesters arrested the next day, as they staged a demonstration.
On 30 July, four students and former pro-independence activists were arrested under the law.
Other activists, like high-profile protest leader Nathan Law, fled the city before the security law came into force.
Mr Law is currently in the UK but media reports are suggesting that Chinese authorities are seeking the arrest of him and other activists in exile.