Protesters in Hong Kong threw gasoline bombs and police fired tear gas Saturday in renewed clashes over anti-government grievances.
Reporters saw at least one person arrested after violence erupted following an afternoon march by several thousand people in Tuen Mun, a district in the northwest of the Chinese territory.
Hong Kong is in the fourth month of sometimes violent protests that occur every weekend. They started with opposition to a proposed extradition law and have expanded to include demands for greater democracy.
Most protesters in Tuen Mun were peaceful but some threw gasoline bombs and bricks toward police who faced them down the street.
They appeared to fall short of the police and there was no indication anyone was hit.
Police with anti-riot helmets and shields responded by firing tear gas.
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In the evening, protesters gathered at a shopping mall in another district, Yuen Long. Some threw gasoline bombs in the street but there was no indication anyone was injured.
Elsewhere, scuffles were reported as government supporters heeded a call by a pro-Beijing member of the Hong Kong legislature to tear down protest posters at subway stations.
The events are an embarrassment for China's Communist Party ahead of October 1 celebrations of its 70th anniversary in power.
Hong Kong's government has canceled a fireworks display that day, citing concern for public safety.
The protesters in Tuen Mun marched about 2 kilometers (1 1/2 miles) from a playground to a government office building.
Many were dressed in black and carried umbrellas, a symbol of their movement.
Protesters chanted, "Reclaim Hong Kong!" and "Revolution of our times!"
Ho initially called for protest signs to be torn down in all 18 of Hong Kong's districts but he said Friday that would be reduced to clearing up trash from streets due to "safety concerns."