RALEIGH, N.C. (WNCN) — A passenger was able to get through airport security with a firearm in their backpack Wednesday at Raleigh-Durham International Airport.

According to the Transportation Safety Administration, the firearm was detected by officers at Nashville International Airport in Nashville, Tennessee on Thursday. The passenger surrendered the firearm to the Metropolitan Nashville Airport Authority and boarded a flight.

TSA’s internal investigation utilizes review of closed circuit television, as well as, images from security-screening equipment. Appropriate corrective action may be required with additional training, the agency said.