Two Hong Kong students who escaped arrest at a July 1 national security law protest when one pulled the other from a riot officer’s grasp were taken into custody on Thursday for unlawful assembly and obstructing police, according to the force. The two males, aged 17 and 19, were detained when officers from the commercial crime bureau raided their homes in Kowloon East’s Tiu Keng Leng neighbourhood and Tung Chung on Lantau after daybreak, according to acting chief inspector Ng Kwan-lim. The pair were present outside Causeway Bay’s Victoria Park when police began arresting people at 4pm on July 1 as crowds defied a ban on gatherings to protest against the new law, which had gone into effect the night before. “As the Police Tactical Unit officer tried to subdue the 17-year-old man on the ground, the 19-year-old man tried to pull the 17-year-old away from the officer and obstructed police in executing their duty. The pair subsequently managed to escape,” Ng said. The riot officer involved in the incident was the same one who was later that same day attacked and stabbed in the shoulder by radical protesters. Taking part in an unlawful assembly carries a maximum penalty of five years in jail under Hong Kong’s Public Order Ordinance. The maximum penalty for the obstruction of police in execution of duty is a two-year jail term. As of Thursday afternoon, the two suspects were being held for questioning and had not been charged. Thousands defy ban on July 1 march to oppose national security law Ng said the investigation was continuing and further arrests were possible. About eight hours after the July 1 stabbing, a 24-year-old man suspected of the attack was arrested at the airport as he attempted to leave the city. He faces one count of wounding with intent and appeared in Eastern Court on July 3. He was remanded in custody and the case was adjourned to August 24. On Thursday last week, his girlfriend was among seven Hongkongers – five men and two women – arrested on suspicion of helping him try to flee.