Hong Kong activist, Joshua Wong and three others have been sentenced a Hong Kong court to between four and 10 months in prison for participating in an unauthorized rally last year to commemorate the 1989 Tiananmen Square crackdown.

So far, it has been recorded in history that this is the first time prominent activists have been jailed over the peaceful candlelight vigil, which has been held annually in Hong Kong’s Victoria Park since 1990, CNN reports.

Due to the risk of the spread of the coronavirus, the police decided to ban the event for the first time last year, but thousands staged a peaceful rally in the usual place.

Amongst those that pleaded guilty and were sentenced Thursday are Wong and three district councilors: Lester Shum, Tiffany Yuen and Jannelle Leung .They were among the 26 charged over the rally.

While Nathan Law and Sunny Cheung fled Hong Kong prior to the charges, other defendants are scheduled to appear in court in June.

Wong received a 10-month sentence for his role in the June 4 rally, to run consecutively with a 17.5-month sentence he is serving over his role in two unauthorized assemblies during anti-government unrest in 2019.

While Yuen and Leung each received four months, Shum was handed a six-month sentence