By John Dodge

CHICAGO (CBS) For the eighth time this year, security agents at Midway Airport discovered a firearm in a passenger’s carry-on baggage.

Transportation Security Administration screeners found a loaded loaded 9mm Smith & Wesson firearm Thursday in the luggage of a 43 year-old male passenger flying from Chicago to McCarran International Airport in Las Vegas.

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“When discovered, TSA immediately notified local law enforcement who responded to the checkpoint and arrested the passenger on a local charge,” the TSA said in a news release.

Further information on the charges was not immediately available. Typically, violators are charged with attempting to carry a concealed firearm in an airport, a misdemeanor.

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Individuals who bring firearms to security checkpoints are referred to law enforcement and are subject to criminal penalties, the TSA says.

TSA also imposes civil penalties ranging from $1,500 up to $7,000 for a single violation of a firearm brought to a security checkpoint.

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TSA discovered more than 1,800 firearms at checkpoints across the nation in 2013 and more than 2,200 firearms in 2014.