A man wielding a knife has been arrested in Hong Kong after allegedly injuring two people at a housing estate in Pok Fu Lam.The force received multiple reports at around 9.20am on Monday that a man in his 20s was attacking residents at Baguio Villa, located at 550 Victoria Road.A domestic helper was injured in the back while a doorman was grazed on the elbow. The helper was sent to Queen Mary Hospital in Pok Fu Lam for treatment.It was unclear whether the injuries were caused by the knife.An...