Published: May 29, 2012 6:01 PM EDT

LEE COUNTY, Fla.- The Lee County Port Authority detained a 59-year-old man at the Southwest Florida International Airport on Sunday after TSA officers found a firearm in his bag.

Michael Anderson was arrested on charges of carrying a concealed weapon.

The x-ray operator observed the item in the man's bag and located the black and silver, Smith and Wesson, semi-automatic handgun, loaded with six rounds of ammunition, inside.

Anderson was a ticketed passenger on a Delta Flight to Atlanta.

According to the police report, the man said he had a lot of camera equipment in several different bags. When he put his equipment in this particular bag, he didn't realize the gun was inside.

Anderson had a Concealed Weapons Permit, but it had expired in 2009.

He was then placed under arrest and transported without incident.