According to the Financial Action Task Force 40 Recommendations, Designated Non-Financial Businesses and Professionals include...

Bank A should file a suspicious transaction report (STR) on the transaction in Country A, as it is the financial institution that observes and processes the suspicious activity in its jurisdiction. According to the FATF Recommendations, financial institutions should report any transaction that they have reason to suspect is related to money laundering, terrorist financing, or other criminal activities, regardless of the amount involved1. The STR should include information about the originator, the beneficiary, and the purpose of the transaction, as well as the reasons for suspicion2. Bank A should also comply with any legal or regulatory requirements in Country A regarding the reporting of cross-border wire transfers3.

1: FATF Recommendation 20 - Reporting of suspicious transactions

2: FATF Interpretive Note to Recommendation 20

3: FATF Recommendation 16 - Wire transfers