The Hong Kong International Airport has limited its express train services ahead of the latest series of planned protests targeting the airport.
In a statement, authorities said only people holding valid flight tickets will be allowed to enter the terminal, with boarding from certain stations suspended for the day.
Officials also warned against using fake boarding passes, air tickets or flight booking information to enter the airport's terminal buildings, saying that "such behaviour could amount to forgery or using a false instrument".
It comes after a night of violent street clashes between the riot police and protesters.
SpaceX's Starship makes orbital debut but flight ends early
UK police release five on bail after arrests at airbase
Thousands huddle in Bangkok shelters as Thai flood damages seen at $320 mln
Floods, landslides kill 56 in India and 14 in Nepal
Indonesia ferry death toll hits 66 as search enters 16th day
Congo's Ebola infections cross 8,000, government says
India's top court rebukes government over timeline for food warning labels
British police arrest five men at US air base in major incident
