The elder brother of wanted fugitive Paul Ha Hoi-chun was brought in by police on Thursday to assist in the investigation into the “Hong Kong Parliament,” a group the authorities have deemed subversive.

It is understood that the 72-year-old man was asked to report to Tseung Kwan O Police Station in the morning to aid the probe concerning his younger brother, who is based in Taiwan. He was released at around 11am after giving his statement.

Paul Ha, 60, is among 19 activists wanted by Hong Kong police for allegedly organizing, establishing, or participating in a subversive organization known as the “Hong Kong Parliament.”

Police earlier accused the group of attempting to achieve “self-determination” by organizing an unofficial election and drafting a so-called constitution for Hong Kong.

Among the 19 wanted persons are businessman Elmer Yuen Gong-yi, commentator Victor Ho, and activists Johnny Fok and Tony Choi. The four are each subject to arrest warrants carrying rewards of HK$1 million.

The remaining 15 are wanted on HK$200,000 bounties each for allegedly organizing or taking part in the group’s election and swearing-in activities.

According to sources, Ha recently established a so-called “Hong Kong Sinners List” under the “Hong Kong Parliament,” calling on overseas Hongkongers to submit personal information of government officials, judges, and police officers.

The group allegedly claimed it would bring these individuals before an “international court,” in what authorities described as an attempt to incite fear and pressure among public officials.