VIDEO: Two Injured in Random Knife Attack at Hong Kong Housing Estate

A 22-year-old man was arrested after allegedly attacking people with a knife at Baguio Villa in Pok Fu Lam, Hong Kong, leaving two people injured, according to Hong Kong media reports.
Police received multiple reports at around 9:20 a.m. Monday that a knife-wielding man was attacking people at the residential complex. The injured included a domestic helper who suffered a back wound and a security guard who sustained an injury to his elbow.
Video circulating online appears to show another man intervening during the incident, but I could not verify the claim that he was a migrant or that he specifically saved a Chinese woman. Available reliable reports confirm the knife attack and two injuries, but not those identity details.
The suspect was arrested, and police are investigating the circumstances surrounding the attack.