HONG KONG -- Radical protesters set fires in Admiralty area, threw petrol bombs at the Hong Kong Special Administrative Region (HKSAR) government offices and vandalized mass transit railway (MTR) stations Sunday afternoon after an illegal rally again turned violent.

After violence erupted, the Hong Kong police started dispersal operations in the Central and Admiralty areas.

During the illegal rally on the Hong Kong Island, the protesters occupied several main roads, causing serious obstruction to the traffic.