According to the Certified Anti-Money Laundering Specialist (the 6th edition), the financial institution (Fl) should take the following actions:
A: Review the client's activity, determine if suspicious activity exists, and report accordingly. The Fl should assess the risk of the situation and determine if there is any suspicious activity that needs to be reported to the appropriate authorities. This would involve conducting a review of the client's account activity and transactions to determine if there are any indicators of money laundering or terrorist financing.
D: Inform local LEA and regulator of the request for awareness. The Fl should inform the local law enforcement agency and regulator of the request from the foreign jurisdiction to raise awareness of the situation and determine if any further actions need to be taken.

Reference: https://www.treasury.gov/resource-center/faqs/Sanctions/Pages/faq_lists.aspx#search

According to the Basel Committee on Banking Supervision standards, the following statements best describe sound practices in relation to customer due diligence (CDD) policies and procedures:
* Banks should take into consideration the occasional banking transaction or the size/level of assets to build an understanding of the customer's profile and behavior. This is because the nature and frequency of transactions and the size of the account balance may indicate the level of risk associated with the customer and the need for ongoing monitoring1
* Banks should develop and implement clear acceptance policies and procedures to identify the types of customer that are likely to pose a higher risk of financing terrorism or money laundering. This is because banks should not enter into or maintain relationships with customers who pose unacceptable risks to the bank or the financial system. Banks should also apply a risk-based approach to CDD and apply more stringent measures to higher-risk customers12
* Banks should implement enhanced due diligence measures for entering business relationships with high-risk customers, such as approval by senior management. This is because banks should ensure that they have adequate information and controls to manage the risks posed by such customers and to comply with the relevant laws and regulations. Senior management should be involved in the decision-making process and be accountable for the outcomes12 References: 1: Basel Committee on Banking Supervision, Consolidated KYC Risk Management, October
2004, page 6-7. 2: Basel Committee on Banking Supervision, Customer due diligence for banks, October
2001, page 8-9.

According to the Financial Action Task Force (FATF) 40 Recommendations, financial institutions should obtain senior management approval before establishing new correspondent banking relationships1. This is to ensure that the financial institution has assessed the money laundering and terrorist financing risks associated with the respondent institution and has applied appropriate due diligence measures. The FATF also requires financial institutions to gather sufficient information about the respondent institution, its business activities, its reputation, its supervision, and its anti-money laundering and counter-terrorist financing policies and procedures1. Additionally, the FATF recommends that financial institutions document the respective responsibilities of each institution and prevent the use of their accounts by shell banks1.
References:
* 1: Guidance on Correspondent Banking Services, FATF, 2016
Reference: https://www.fatf-gafi.org/media/fatf/documents/recommendations/pdfs/FATF%
20Recommendations%202012.pdf (15)