Hong Kong media tycoon Jimmy Lai arrested under new security law

Leading pro-democracy figure detained over alleged foreign collusion as police search Apple Daily offices

• Profile: a pro-democracy tycoon who is not afraid to take on Beijing

One of Hong Kong's most strident pro-democracy figures has been arrested and the offices of the newspaper he owns searched by police in a stark escalation by authorities enforcing a new national security law brought in by Beijing.

The raid on Apple Daily, Hong Kong's largest pro-democracy daily paper, and arrest of Jimmy Lai and other senior executives were condemned by activists and journalists, who said they marked the day press freedom officially died".