There will be a strong police presence in the vicinity of the Convention and Exhibition Centre in Wan Chai - where top officials and other dignitaries will attend a flag-raising ceremony and a reception on Friday morning.

Roads around the venue have been closed off. For more information, click here.

Police sources said their elite units, including the so-called "raptor squad" as well as the counter terrorism response unit, will conduct "high-profile" patrols at what they described as "sensitive locations".

They added that the force will continue to conduct risk assessments and enhance officers' protective gear.