Hong Kong pro-democracy tycoon Jimmy Lai arrested

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.