The attackers completely disregarded law and order as they indiscriminately assaulted innocent people, she said, adding that what they did was appalling and totally unacceptable. She requested that the police chief conduct an extensive and in-depth investigation into the incidents and punish those who violated the law.

The SAR government has zero tolerance for any kind of violence at any time, anywhere and toward anyone.

Commissioner of Police Lo Wai-chung pledged that the police investigation will begin immediately, and the force will pursue offenders at all costs in order to bring them to justice.

He also dismissed allegations that the police force acted leniently when facing the violent attackers at the Yuen Long subway station. The police force is against any kind of violence, Lo stressed.

Wang Zhimin, director of the Liaison Office, made the "strongest condemnation" of the vandalizing of the office on Sunday night.

Saying that Hong Kong has seen a series of radical protests that exceeded the boundaries of peaceful demonstration, Wang said these acts have challenged the city's rule of law and seriously undermined the fundamental interests of Hong Kong residents.

He said he believed the Hong Kong government and its law-enforcement bodies will punish those responsible according to the law.