Breaking from Reuters as we speak:
Hong Kong democracy protesters defied volleys of tear gas and police baton charges to stand firm in the centre of the global financial hub on Monday, one of the biggest political challenges for China since the Tiananmen Square crackdown 25 years ago.
The Communist government in Beijing made clear it would not tolerate dissent, and warned against any foreign interference as thousands of protesters massed for a fourth night in the free-wheeling, capitalist city of more than 7 million people.
"Hong Kong is China's Hong Kong," Foreign Ministry spokeswoman Hua Chunying defiantly told a news briefing in Beijing.
The unrest, the worst in Hong Kong since China resumed its rule over the former British colony in 1997, sent white clouds of gas wafting among some of the world's most valuable office towers and shopping malls before riot police suddenly withdrew around lunchtime on Monday.
And several pictures from the last 24 hours: