Director Tony Mattivi served as a federal prosecutor for over 20 years, prosecuting drug trafficking, violent crime, racketeering, organized crime, gangs, money laundering and terrorism cases.

Mattivi was the lead prosecutor for the capital case against the al Qaeda operative who masterminded the bombing of the USS Cole, in 2000. He also worked for the U.S. Department of Justice's (USDOJ) Regime Crimes Liaison Office in Iraq, advising the Iraqi High Tribunal as they tried members of Saddam Hussein's regime for committing war crimes.

Director Mattivi led a team of prosecutors who convicted three Kansas militia members for plotting to slaughter Somali Muslim immigrants living and worshipping at an apartment building and mosque in Garden City. He also prosecuted Terry Lee Loewen, a former U.S. Marine who attempted to detonate high explosives at the Wichita airport on behalf of al Qaeda, and John T. Booker, who conspired to detonate a truck bomb at Fort Riley in support of ISIS.

Over the years, he also worked for the Kansas Attorney General's Office, the Shawnee County District Attorney's Office, and as legal counsel for Medcor, an international healthcare company.

Mattivi is a graduate of Metropolitan State College of Denver, and Washburn University School of Law. He was the Antiterrorism and National Security Coordinator for the District of Kansas, and recently served as president of the Federal Bar Association chapter of Kansas and Western Missouri.

Attorney General Kris Kobach nominated Mattivi to be the 13th Director of the KBI, and he was confirmed on February 9, 2023.