Hong Kong's rail operator MTR Corp said that due to serious vandalism some stations will not be opened for service on Sunday, as damaged facilities needed time for repair.

The former British colony is on edge ahead of the 70th anniversary of the founding of the People's Republic on Oct. 1, with authorities eager to avoid scenes that could embarrass the central government in Beijing.

Demonstrators' demands include an independent inquiry into what they call police brutality and a full withdrawal of the extradition bill.