Macau authorities arrested former pro-democracy lawmaker Au Kam-san on July 31, 2025, marking the first use of the city’s national security law since its enactment in 2009 and amendment in 2023. Police accused Au Kam-san of colluding with foreign forces and anti-China groups, actions deemed to endanger China's national security. The arrest was carried out by Macau's judicial police, and Au's wife was also summoned to the prosecutor's office. This move has drawn condemnation from the European Union, which criticized the lack of pluralism in Macau following the detention. The Chinese mission to the European Union expressed strong dissatisfaction and opposition to the EU's remarks regarding the law enforcement operation in Macau. Separately, in Hong Kong, authorities arrested a man for allegedly threatening media outlets to publish a report promoting a fundraising website for wanted activists, highlighting ongoing regional security enforcement activities.