Malaysia’s securities regulator is reviewing the work carried out by international auditors KPMG and Deloitte to see if they were “were aiding and abetting" in the 1MDB scandal, "or merely negligent."
This could be huge if it cascades into investigations of other clients who these firms prepare their audits for. The Big Four accounting firms are PricewaterhouseCoopers, Ernst & Young, KPMG, and Deloitte. They conduct the financial audits for just about every major company in the world.
There is absolutely no way major money laundering operations can go on without these companies being in on the game. If you remember Enron, their auditor was Arthur Andersen. When that scandal hit, Aurthur Andersen was finished.
https://www.reuters.com/article/us-malaysia-politics-1mdb-auditors/malaysia-probing-audit-firms-conduct-in-1mdb-scandal-idUSKCN1PK079