Where a Capital Market Service Provider's risk-based monitoring systems identify significant or abnormal transactions (as defined in paragraph AML-2.2.2 and rule AML-2.2.3), it must verify the source of funds for those transactions, particularly where the transactions are above the occasional transactions threshold of BD6,000. Furthermore, Capital Market Service Providers must examine the background and purpose to those transactions and document their findings. In the case of one-off transactions where there is no ongoing account relationship, the Capital Market Service Provider must file a Suspicious Transaction Report (STR) if it is unable to verify the source of funds to its satisfaction (see Chapter AML-4).