Police in Hong Kong have fired tear gas and water cannon at protesters rallying against China's plans to impose a new security law on the territory.

Axar.az reports citing foreign media.

Thousands of demonstrators have been marching through the city centre. Police say 120 have been arrested.

Earlier, 200 senior politicians from around the world issued a joint statement criticising China's plan.

But China's Foreign Minister Wang Yi said the legislation should be brought in "without the slightest delay".

China is seeking to pass a law that would ban "treason, secession, sedition and subversion" in the territory.

Activists fear it is an attempt to limit freedoms and silence Beijing's opponents.