Three Hong Kong activists from a now-defunct group that organized annual vigils commemorating China’s 1989 crackdown on pro-democracy protesters were convicted on Saturday for failing to provide authorities with information on the group in accordance with a national security law.

Chow Hang-tung, Tang Ngok-kwan and Tsui Hon-kwong were arrested in 2021 during a crackdown on the city’s pro-democracy movement following massive protests more than three years ago. They were leaders of the Hong Kong Alliance in Support of Patriotic Democratic Movements of China before it disbanded under the shadow of the Beijing-imposed law.

The alliance was best known for organizing candlelight vigils in Hong Kong on the anniversary of the Chinese military’s crushing of the 1989 Tiananmen Square pro-democracy protests. Critics say its shutdown has shown freedoms that were promised when Hong Kong returned to China in 1997 are eroding.

Before the group voted to disband, police had sought details about its operations and finances in connection with alleged links to democracy groups overseas in August 2021, accusing it of being a foreign agent.

But the group refused to cooperate, arguing police were arbitrarily labeling pro-democracy organizations as foreign agents. It added the police did not have a right to ask for its information because it was not a foreign agent and the authorities did not provide sufficient justification.