Fiery clashes erupted across the city, with security chief John Lee cautioning "unthinkable" consequences if the violence continued.
Authorities have shut down schools, rail links and several businesses in the Asian financial hub as a safety precaution.
On Tuesday night, hundreds of black-clad protesters tried to block riot police from entering the Chinese University of Hong Kong (CUHK) near Tai Po by hurling bricks and petrol bombs.
Venezuela quake death toll nears 3,000 as rescue effort winds down
The death toll from last week's devastating twin earthquakes in Venezuela has climbed to 2,954, as hopes of finding more survivors continue to fade.
Eight injured in New York shooting
Eight people, including four children, were injured in a shooting in the Coney Island area of Brooklyn, New York City, last night as Independence Day celebrations and fireworks displays were taking place.
Trump appears on National Mall for July 4 speech after storm-related delay
After a storm-related delay, US President Donald Trump took the stage on the National Mall on Saturday to deliver a campaign-style speech to mark the country's 250th anniversary.
Qatar says all maritime activities will resume immediately
Qatar said on Sunday that maritime activities would resume with immediate effect, according to a Transport Ministry statement posted on X.
St. Petersburg region port, oil terminal hit in Ukrainian drone attack
Russia's second city of St. Petersburg and the surrounding Leningrad region came under a large Ukrainian drone attack overnight on Saturday, with a local port and oil infrastructure struck, Russian and Ukrainian authorities said.
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