Hong Kong authorities have shut government offices in the financial district for the rest of the week after a day of violence over an extradition bill that would allow people to be sent to mainland China for trial.

On Thursday a few hundred protesters milled around, with some sorting their supplies of face masks and food as a widespread cleanup around the legislature took place.

Security remained tight, with scores of police with helmets and shields in the area. Plainclothes police officers checked identification of morning commuters.