GRAPEVINE, Texas (AP) -- Police have arrested a man who never had a ticket but got through security at Dallas-Fort Worth International Airport and boarded a plane. Airport officials said Monday that a car parked curbside, outside a terminal, was searched and no threat was found. Authorities say the 26-year-old man somehow got through a Transportation Security Administration checkpoint Sunday night. The man, whose name wasn't immediately released, boarded a commercial flight without having a ticket. An airport agent contacted law enforcement after the man boarded. He was arrested on a charge of criminal trespassing. Details on the flight, which was delayed amid the incident but later departed, weren't immediately released. TSA spokesman Mike England says the agency is reviewing the incident and has since added more barriers to screening areas at DFW airport.