A BBC investigation has revealed that Deloitte allegedly assisted Russian oligarch Roman Abramovich in falsifying documents to evade tax payments on his substantial wealth. This involved backdating paperwork in ways that effectively concealed his assets, including yachts and mansions, from financial records. The investigation uncovered evidence suggesting deliberate attempts to hide ownership details. Deloitte reportedly played a role in restructuring his holdings in ways designed to avoid scrutiny. These actions raise serious questions about the firm's professional ethics and compliance. The findings highlight the complexities involved in tracking assets linked to individuals sanctioned in connection with Russia’s invasion of Ukraine. This case exposes potential loopholes in international financial regulations.