There are some indications that a transaction is suspicious:

• non commercial rationale for customer buying the product he seeks
• erratic or abnormal behaviour
• use false address or ask to use a PO Box address
• policyholder is a known criminal
• offering to pay a large premium with cash
• insistence on a non face to face transaction
• request to associate undue levels of secrecy with a transaction
• large one-off transactions
• overseas business from higher risk jurisdictions