Mutual Legal Assistance
The formal mechanism for cross-border criminal cooperation — and, in grand corruption cases, frequently where cooperation stalls.
Mutual legal assistance, or MLA, is the formal process by which one state requests another state’s legal cooperation. A successful MLA request permits the requesting state to leverage the requested state’s coercive powers — gathering evidence, serving legal process, or executing search and seizure — to investigate or prosecute cross-border offences. Routed through designated central authorities under bilateral treaties or domestic legislation, it is the primary legal framework for international criminal cooperation.
The mechanism relies on strict administrative criteria, including dual criminality, proportionality, confidentiality, and compliance with local evidentiary rules. Typical requests seek witness evidence, banking and communications records, production orders, search and seizure, asset restraint, or service of process.
No treaty mandates a response timeline. Central authorities retain significant discretion over sequencing and priority. Each condition attached to a request represents a legitimate basis for delay or refusal — and in cases involving politically connected targets or complex cross-jurisdictional asset structures, these conditions stack.
The Azerbaijani Laundromat moved USD 2.9 billion through four UK shell companies while investigations proceeded separately in four jurisdictions: Denmark, Estonia, the United Kingdom, and the United States. Total recovery: approximately 0.2 per cent.
Definition drawn from the Basel Institute on Governance (Introduction to MLA) and AML/CFT Library (aml-cft.net).
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