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.
US and Israel launch strikes on Iran
The United States and Israel launched strikes on Iran on Saturday, targeting its leadership and dimming hopes of a diplomatic solution to Tehran's nuclear dispute with the West.
Arab League condemns Iranian aggressions against UAE, other Arab states
The League of Arab States strongly condemned the Iranian attacks against the UAE, Qatar, Bahrain, Kuwait, Jordan and Saudi Arabia, saying they constitute a flagrant violation of the sovereignty of states that advocate peace, have worked towards achieving stability, and did not participate in the war.
Drone targets Kuwait international airport
Kuwait's Civil Aviation has announced that a drone targeted Kuwait International Airport, causing minor injuries to several employees and material damage to the passenger terminal (T1) amid current regional developments.
Saudi Arabia condemns Iranian attacks on Arab countries
Saudi Arabia has strongly condemned Iran's attacks on the UAE, Bahrain, Qatar, Kuwait and Jordan on Saturday, stating that it violates the sovereignty of the countries.
Qatar successfully intercepts attacks on state territory
The Qatari Ministry of Defence has announced that it successfully intercepted a number of attacks targeting its territory.
