Hong Kong pro-democracy activist Joshua Wong was remanded in custody on Monday after pleading guilty to charges of organising and inciting an unauthorised assembly near the police headquarters during last year's anti-government protests.

Masked Hong Kong riot police stopped and searched people arriving on Saturday for a march billed as a global "emergency call" for autonomy for a city that was guaranteed its freedoms when it returned from British to Chinese rule in 1997.

Hong Kong's government disqualified prominent pro-democracy activist Joshua Wong from upcoming district elections on Tuesday, a move likely to sow further discord in a city hit by five months of anti-government unrest.

China formally summoned the German ambassador to Beijing on Wednesday and threatened negative consequences for bilateral relations after Foreign Minister Heiko Maas met with Hong Kong protest leader Joshua Wong earlier this week.

Hong Kong activists urged Taiwan on Tuesday to help promote democracy in the Chinese-ruled city amid its worst political crisis in decades

Chaos engulfed Hong Kong's financial heart on Saturday night as police fired tear gas and water cannon at petrol-bomb-throwing protesters, who defied a ban on rallying

Hong Kong authorities on Friday charged pro-democracy activist Joshua Wong with organising an illegal protest as they tighten a clampdown on unrest that has plunged the Asian financial hub into its biggest political crisis

Hong Kong activist Joshua Wong was jailed for the second time Wednesday for his role in mass pro-democracy protests as concern grows that prison terms for young campaigners are shutting down debate in the semi-autonomous city as Beijing increases control.

Thailand on Wednesday barred entry to a Hong Kong student activist who helped organise pro-democracy protests in the Chinese-ruled city in 2014, with a newspaper saying he had been "blacklisted" at China's request.