The Allegheny County Police Department announced in a Facebook post that it filed charges against a Warren man after a firearm was discovered at the main security checkpoint at Pittsburgh International Airport.

Police say the incident occurred just before 3:30 p.m. on Tuesday when Transportation Security Administration officers observed a 9mm handgun within a passenger’s backpack at the checkpoint.

“County Police identified the passenger as 36-year-old Jeremy Snell and determined Snell did not possess a valid concealed carry permit,” police say. “Snell is facing one felony charge of carrying a firearm without a license. The Federal Bureau of Investigation was also notified.”

Police added that passengers who bring firearms into an airport security checkpoint can face a federal civil fine up to $10,000.