Hong Kong authorities have arrested a 57-year-old man for allegedly scamming three victims out of HK$310,000 (US$39,500) by pretending to be a police officer or government officials while claiming he could help them buy concert tickets and mobile phones at discounted prices through his contacts. Police said on Thursday that they received reports last month from two of the three victims who handed over around HK$11,000 to the alleged scammer before losing contact with him. A broader investigation...