The Securities and Futures Commission (SFC) has issued revised money-laundering guidance notes to brokers, reminding them to report suspicious activities to the authorities.
Under present legislation, brokers, futures traders and foreign exchange dealers must report suspicious transactions to the police and customs.
The SFC originally issued guidance notes in 1995.
The revised version includes 40 recommendations suggested in June 1996 by the International Financial Action Task Force, an organisation that fights money laundering.
The recommendations included discouraging brokers from allowing cash transactions, as these were hard to trace.
A police source said Asia was a very cash-oriented society, and that it was hard to prevent investors from using cash for settlements.
