Hong Kong police said on Tuesday they were investigating the playing of a song which was the unofficial anthem of the city's anti-government protests at the men's final of the Sevens Series rugby tournament in South Korea this weekend.
"Glory to Hong Kong" was written in 2019, just as Hong Kong's pro-democracy protests erupted, and was considered by many demonstrators in the former British colony to be their national anthem.
The song was banned in 2020 after China imposed sweeping national security laws on Hong Kong that punish what Beijing defines as secession, subversion, terrorism and collusion with foreign forces with up to life in prison.