Transportation Security Administration (TSA) officers stopped a Centerville man from bringing a loaded handgun onto a flight Monday at Erie International Airport.

The .380 caliber gun, which was loaded with six bullets, was detected by X-ray inside a carry-on bag at the security checkpoint, according to TSA.

The man faces a civil penalty of up to $15,000 for the incident.

Passengers can only travel with firearms in checked baggage, according to TSA. Firearms must be unloaded then packed in a hard-sided, locked case and must be declared at the airline check-in counter.

Last year, 6,542 firearms were found at 262 out of 430 airport security checkpoints nationwide, TSA said. Eighty-eight percent of those guns were loaded.