Customs officials are working with the University of Hong Kong to develop a tool that can trace cryptocurrency transactions, with the authority stressing it had recorded seven suspected money laundering cases involving virtual assets and more than HK$9 billion (US$1.1 billion) in recent years. Mario Wong Ho-yin, assistant commissioner for intelligence and investigation at the Customs and Excise Department, said on Thursday it would ramp up collaborations with academics, finance and virtual asset...