The four minors had pleaded guilty last month alongside fellow defendant Kwok Man-hei.
Hong Kong community and civil society leaders face a double blow with China's two-pronged approach after the city was convulsed by huge and often violent anti-Beijing protests two years ago.
Lam Man-chung was the editor who oversaw the final edition of the Beijing-critical daily in June after its top leadership was arrested and its assets frozen.
The arrested people, including six students, were attempting to make the explosive triacetone triperoxide (TATP) in a homemade laboratory at a hostel, police said.
The July 21 attack saw more than 100 people wearing white T-shirts wielding sticks and poles attack anti-China protesters and bystanders at a train station in Yuen Long district.
Choy Yuk-ling, also known as Bao Choy, was investigating a mob attack on anti-Beijing protesters in 2019 when she was arrested in November on charges of falsely declaring why she needed to obtain license plate information from a database.
Days before he takes office, rights organisations highlight US human rights transgressions and international law violations at the military detention centre.
Dozens arrested at new Paris protest against security law which critics fear it could erode press freedom and make it more difficult to expose police brutality.
Paris prosecutor Remy Heitz says judicial authorities wanted to make sure that three police officers did not have any contact with one another and that they could not exert any pressure on witnesses.
At least 60 people have been arrested in Hong Kong as anti-Beijing protesters held small demonstrations on China's National Day, flaunting a ban on mass gatherings and protests.
Anti-government protesters have adapted new methods to protest without violating the new security law legislation.
On the eve of the primaries, police searched the office of independent pollster Robert Chung, whose Hong Kong Public Opinion Research Institute helps organise the election, raising concerns among activists of interference in the poll.
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