A Hong Kong legal body has issued warning letters to lawyers linked to a defunct fund set up to help protesters arrested during the 2019 protests.

In a Chinese statement on Monday, Law Society of Hong Kong President Roden Tong said the group had completed an investigation into 16 lawyers in relation to the 612 Humanitarian Relief Fund.

The lawyers investigated included those who had received money from the fund, which provided financial and legal assistance to individuals detained in connection with the protests and unrest in 2019.

According to Tong, those lawyers had engaged in acts that could compromise their integrity and the reputation of the profession, potentially breaching the Solicitors’ Practice Rules.

The society sent out warning letters of varying severity to the lawyers. According to local media outlet Ming Pao, no cases had yet been transferred to the disciplinary committee empowered to revoke their licenses.

“As the regulatory body for Hong Kong lawyers, the Law Society of Hong Kong attaches great importance to the conduct of members. We have established and effective mechanisms for handling complaints,” Tong added.

In January, then-president of the Law Society Chan Chak-ming, said it had concluded investigations into 10 out of the 16 lawyers. He said at the time that those 10 cases included “unsubstantiated” and “substantiated” cases.

Set up during the 2019 unrest, the 612 Humanitarian Relief Fund provided legal assistance and funds for psychological counselling, medical treatment and emergency relief to protesters.

The fund ceased operations at the end of October 2022, making it among the dozens of civil society groups to disband in the wake of the Beijing-imposed national security law. Ahead of its disbanding, five prominent activists who served as trustees of the fund were arrested, including Cardinal Joseph Zen, barrister Margaret Ng and singer Denise Ho.

They were apprehended by national security police on suspicion of conspiring to collude with foreign powers, but were later charged with failing to register the fund under the Societies Ordinance.

The activists pleaded not guilty but were convicted in November 2022 and fined up to HK$4,000 each. They have sought to challenge their conviction, with the High Court set to hear the appeal next January.

Separately, the Hong Kong Bar Association said in January that it had completed its investigations of 38 barristers linked to the 612 Humanitarian Relief Fund. None were found to have engaged in professional misconduct.

Protests erupted in June 2019 over a since-axed extradition bill. They escalated into sometimes violent displays of dissent against police behaviour, amid calls for democracy and anger over Beijing’s encroachment. Demonstrators demanded an independent probe into police conduct, amnesty for those arrested and a halt to the characterisation of protests as “riots.”