Hong Kong anti-government protesters paralysed parts of the Asian financial hub for a fourth day, with some transport links, schools and many businesses closing, as police warned of a rise in violence to a deadly level.

Protesters have torched vehicles and buildings, hurled petrol bombs at police stations and trains, dropped debris from bridges on to traffic below, and vandalised shopping malls and campuses, raising questions about how and when more than five months of unrest can be brought to an end.

Nicolas Groffman is a lawyer who writes for the South China Morning Post. He joined Kerre McIvor to give us the latest from Hong Kong.

LISTEN TO THE INTERVIEW ABOVE