In 2009, an anonymous letter alleging possible illegal and fraudulent activities by management since 2007 was sent to KPMG Hong Kong, then CMED's auditor. The CMED Audit Committee retained law firm Paul Weiss Rifkind Wharton & Garrison, which in 2009 investigated the allegations and advised the committee as to any appropriate further measures. In September 2015, U.S. District Judge Ronnie Abrams of the US District Court for the Southern District of New York held that Paul Weiss-despite its refusal-must give CMED's liquidator, who was scrutinizing the alleged $355 million fraud, otherwise-privileged information concerning Paul Weiss's internal investigation.