(1) the investigation involves a possible breach of the Securities and Futures Act, Securities and Futures Regulations, any other relevant applicable laws and regulatory requirements relating to the regulation of markets and licenced entities, Rules, or Directives;

(2) SGX-ST receives a written complaint involving a Trading Member, Director, Trading Representative, Officer, employee or agent;

(3) there is a dispute between Trading Members on a trading matter; or

(4) in SGX-ST's opinion, the circumstances warrant.