The Government has urged protesters to stay calm and disperse peacefully as soon as possible.
It said today some major thoroughfares have been blocked by protesters, causing serious disruption to traffic.
Classes in Wan Chai and Central & Western Districts have been suspended.
The Government urged those blocking roads to vacate some carriageways to allow the passage of emergency vehicles and the resumption of public transport services.
As the people gathering on roads have generally calmed down, Police have stood down anti-riot officers, it added.
