Jeffrey H. Knox, former Chief of the Fraud Section of the U.S. Department of Justice’s Criminal Division, will join Simpson Thacher.

Knox will be a partner based in the Simpson Thacher’s Washington, D.C. office and a member of the firm’s Government and Internal Investigations Practice.

During his tenure at the Department of Justice,  Knox served as the chief and, before then, the second-ranking official of the Criminal Division’s Fraud Section, which has responsibility for some of the nation’s most significant corporate crime cases.

Knox supervised more than 100 prosecutors investigating and trying some of the most complex fraud cases in history, including the investigations of global financial institutions for violations relating to the alleged manipulation of LIBOR and other benchmark rates.

Before joining the Fraud Section, Knox was an Assistant U.S. Attorney in the Eastern District of New York.

“We are pleased to welcome Jeff back to the firm,” said Bill Dougherty, Chairman of Simpson Thacher’s Executive Committee.  “His deep experience in overseeing high-stakes government investigations and enforcement actions will be a significant asset to our clients as they navigate an increasingly complex enforcement landscape.”

“We are very excited that Jeff is joining our Government and Internal Investigations team here at Simpson Thacher,” said Mark Stein, head of the firm’s Government and Internal Investigations Practice. “As Chief of the Fraud Section, Jeff has presided over many of the most significant financial fraud, healthcare fraud, and FCPA investigations in recent years, and we know that he is greatly respected within both the DOJ and the white collar bar. His experience and insight will provide substantial value to our clients.”

Knox graduated with honors from Northwestern University School of Law in 1999, and from the University of Arizona in 1996.