(WBIR - Knoxville) The newest director of the FBI, James Comey, visited the bureau's Knoxville office Tuesday.

Comey held a brief question and answer session with the media and addressed the FBI's efforts to fight criminal activities ranging from cyber-crimes, international terrorism, and human trafficking.

10News asked Comey to speak about the bureau's work on financial and white collar crimes, especially in light of the FBI's raid on Pilot Flying J's Knoxville headquarters in April 2013 for rebate fraud.

Comey would not discuss the Pilot case specifically, but spoke in general terms about the importance of investigating fraud due to the calculated nature of financial crimes.

"Very few people commit fraud crimes high on crack or inflamed because they caught their spouse in a relationship with somebody. They think before they act. And so that offers an opportunity for us to deter them, to make them afraid to cross that line to commit crimes," said Comey.

Comey said white collar criminal cases are difficult to make, but are worth the investment for general deterrence as well as specifically being able to "lock up fraudsters."

"Corporate fraud and white collar crimes of all kinds will always be with us, unfortunately. But they are ones we have to be aggressive with to send messages to change behavior."

Comey began serving as FBI director last summer. The director of the FBI serves a 10-year term, meaning Comey's term will expire in 2023.