Correspondent banking is a service that allows banks to access financial services in different jurisdictions through intermediary banks, known as correspondent banks. Correspondent banking can facilitate cross-border transactions, foreign exchange, and other financial activities for banks and their customers. However, correspondent banking also poses various risks, such as money laundering, terrorist financing, fraud, corruption, tax evasion, and sanctions evasion. Correspondent banks may have no direct relationship with the customers of the respondent banks, making it difficult to verify their identity and monitor their transactions.
Correspondent banks may also rely on the compliance programs of the respondent banks, which may not meet the standards of the correspondent banks' jurisdictions.
One of the risk factors that increases the risk for a correspondent bank is being a major service provider to money service businesses (MSBs). MSBs are entities that provide money transmission, currency exchange, check cashing, prepaid cards, and other similar services. MSBs are often considered high-risk customers, because they may serve as conduits for illicit funds, especially if they operate in jurisdictions with weak anti-money laundering regulations or oversight. MSBs may also have a large and diverse customer base, making it challenging to conduct customer due diligence and transaction monitoring. Therefore, correspondent banks that provide services to MSBs may face higher exposure to money laundering and other financial crimes, and may need to apply enhanced due diligence and risk mitigation measures.
References:
* Understanding Risk in Correspondent Banking
* GUIDANCE ON CORRESPONDENT BANKING SERVICES
* Correspondent Bank: Definition and How It Works
* Correspondent banking - why it's important to understand the risks
Reference:
https://www.fatf-gafi.org/media/fatf/documents/reports/Guidance-Correspondent-Banking-Services.pdf

A lack of information about beneficial owners is a red flag for potential money laundering or terrorist financing. It is important to identify who the actual owners of the company are to understand their potential risk exposure.
Confusing details about the proposed business activity and lack of knowledge about the proposed business are also red flags for potential money laundering or terrorist financing. This could indicate that the proposed business activity is not legitimate and is being used to conceal illegal activities.
Therefore, these two observations should be escalated to the compliance officer for further investigation.

purchasing a low volume of chips with cash and turning them in for a casino check is a common technique of money laundering in casinos. This method allows the launderer to convert "dirty" money into physical casino chips, which are then played with for a short while, and then cashed out as "clean" money in the form of a check. This way, the launderer can avoid the reporting requirements and the traceability of cash transactions.
References:
* ACAMS CAMS Certification Video Training Course - Exam-Labs1
* Understanding Money Laundering in Casinos | ComplyAdvantage2
* Casino Money Laundering: Red Flag Indicators - Alessa3
Reference: https://www.americangaming.org/wp-content/uploads/2018/12/Best-Practice-2017.pdf

the bank teller should not provide any information to the police officer without consulting the compliance officer first. The compliance officer is responsible for ensuring that the bank follows the applicable laws and regulations regarding customer privacy, data protection, and anti-money laundering. The compliance officer can verify the authenticity and validity of the request, determine the appropriate response, and obtain any necessary approvals or authorizations before releasing any information. The bank teller should not reject the request outright, as this could be seen as uncooperative or obstructive. The bank teller should also not provide the information after management approval, as this could bypass the compliance officer's role and expose the bank to legal or regulatory risks.
References:
* Bank Records and Financial Privacy Laws - FindLaw1
* Anti-Money Laundering (AML) Risk Assessment | ACAMS2
* What is the Difference Between Smurfing and Structuring?3

Structured transactions are a common method of money laundering, where large amounts of cash are broken down into smaller deposits or withdrawals to avoid reporting thresholds or detection. The most effective tool to detect such transactions is a software program that can link apparently unrelated transactions by using various criteria, such as customer name, address, account number, identification number, transaction amount, date, time, location, etc. Such a program can help identify patterns, trends, and anomalies that may indicate money laundering activity.
References:
* ACAMS CAMS Certification Study Guide1, Chapter 2: Money Laundering Risks and Methods, Section
2.2: Common Money Laundering Methods, pp. 51-52
* ACAMS CAMS Certification Video Training Course2, Module 2: Money Laundering Risks and Methods, Lesson 2.2: Common Money Laundering Methods
* ACAMS CAMS Certification Exam Outline3, Domain 2: Compliance Standards for Anti-Money Laundering (AML) and Combating the Financing of Terrorism (CFT), Task 2.2: Implement risk-based CDD, EDD and ongoing due diligence policies, procedures and processes, p. 13