Trade-based money laundering (TBML) is a method of disguising and moving illicit funds through the international trade system. Criminals often manipulate various aspects of trade transactions, such as pricing, quantity, documentation, and commodity type, to transfer value and obscure the source of funds. Some of the common red flags that may indicate TBML are:
* The transaction involves the use of front (or shell) companies: Front or shell companies are entities that have no physical presence, no employees, and no business activity, but are used to facilitate money laundering. They often have vague or generic names, are registered in secrecy jurisdictions, and have no available ownership information. In this case, ABC Holdings Ltd. and Sunrise Holdings Ltd. could be front or shell companies that are used to launder money through trade transactions.
* The type of commodity being shipped appears inconsistent with the exporter or importer's regular business activities: Criminals may use commodities that are unrelated to their core business or that have low correlation with the market price to launder money. They may also use commodities that are difficult to value, verify, or trace, such as precious metals, gems, art, or antiquities. In this case, the automotive parts company and the silk flower supplier seem to have no logical connection, and the value of the silk flowers may be inflated or deflated to transfer funds.
References:
* Trade-Based Money Laundering: Risk Indicators - Financial Action Task Force, pp. 9-10, 14-15
* Identifying TBML: 8 Trade-Based Money Laundering Red Flags - Alessa, pp. 1-2
* FFIEC BSA/AML Appendices - Appendix F - Money Laundering and Terrorist Financing Red Flags, p. 7
* AML Red Flags - What are the Top 10 Indicators? - ComplyAdvantage, p. 1

Suspicious transaction report (STR) information is confidential and should not be disclosed to anyone outside the compliance function or law enforcement authorities. Providing STR information to the credit department could compromise the integrity of the reporting process and expose the institution to legal risks. The compliance officer should decline to provide the STR information to the credit department and explain the reasons for doing so.
References:
* CAMS Certification Package - 6th Edition | ACAMS, Chapter 4: Conducting and Supporting the Investigation Process, page 136
* CAMS Certifications: How to Get CAMS Certified | ACAMS, Candidate Handbook, page 16
* ACAMS CAMS Certification Video Training Course - Exam-Labs, Video 4.3: Suspicious Transaction Reporting
* Exam CAMS: Certified Anti-Money Laundering Specialist (the 6th edition), Practice Test 1,

The investigator should escalate these concerns to the bank anti-money laundering officer, who is responsible for overseeing the implementation and effectiveness of the bank's AML/CFT policies and procedures, as well as ensuring compliance with relevant laws and regulations. The bank anti-money laundering officer can then decide on the appropriate course of action, such as conducting further investigation, reporting to the regulators, or terminating the relationship with the customer. The other options are not suitable for escalating these concerns, as they may not have the authority, expertise, or responsibility to handle such matters.
References:
ACAMS, CAMS Examination Study Guide, 6th Edition, Chapter 4, pp. 113-114 FATF Guidance: The Role of Hawala and Other Similar Service Providers in Money Laundering and Terrorist Financing, October 20131, p. 19 Basel Committee on Banking Supervision, Sound management of risks related to money laundering and financing of terrorism, June 20172, p. 10