Hong Kong’s national security police have detained the father and brother of Anna Kwok, a wanted activist, over allegations they were involved in managing her finances, local media reported Friday. This marks the first known instance of the city’s national security law being used against the family members of a political dissident.

Kwok, who serves as executive director of the U.S.-based Hong Kong Democracy Council, is among 19 overseas activists sought by Hong Kong authorities. She faces accusations of colluding with foreign forces, with a HK$1 million ($127,656) bounty placed on her capture.

According to a police statement, two men, aged 35 and 68, were arrested on April 30 under suspicion of “attempting to deal with, directly or indirectly, any funds or other financial assets” belonging to Kwok. Local media outlets, citing anonymous sources, identified the men as her brother and father.

Authorities formally charged the 68-year-old on Friday, accusing him of attempting to alter the details of Kwok’s insurance policy and seeking to withdraw its value. He is expected to appear in West Kowloon Magistrates’ Courts later in the day, while the younger man has been released on bail as investigations continue.

Attempts to reach legal representatives for Kwok’s family were unsuccessful. Police also issued a warning to the public, emphasizing that assisting fugitives with financial matters carries a penalty of up to seven years’ imprisonment.

The U.S. has sharply criticized Hong Kong for its continued targeting of the relatives of pro-democracy activists abroad. Meanwhile, Chinese and Hong Kong officials maintain that the national security law has been essential in restoring order and safeguarding the city’s economic future.