A Carroll County man was arrested Tuesday morning at Baltimore-Washington International Thurgood Marshall Airport after a Transportation Security Administration agent detected a 45-caliber handgun in his luggage at a checkpoint.

TSA spokesman J. Kawika Riley said the man was trying to pass through the screening area at Pier C when an X-ray machine operator noticed what appeared to be a weapon in the passenger's carry-on luggage. A Maryland Transportation Authority police officer was summoned to the scene to conduct a search and found the handgun, Riley said.

Police spokesman Sgt. Kirk Perez said Christopher GlenCollege, 44, of Hampstead was arrested. Perez said he was charged with illegally trying to transport a handgun on his person and taking an unauthorized weapon into an airport screening area.

The spokesman said College was taken to the Anne Arundel County Detention Center. Court records show he was released on $25,000 bail. College could not be reached for comment Wednesday.

The incident is the second weapons arrest reported at BWI in the past month. Amr Gamal Shedid, 24, of Baltimore was arrested July 7 after TSA agents detected 13 knives in carry-on luggage at Pier D.

Michael.dresser@baltsun.com