ALBUQUERQUE, N.M. -- The Albuquerque airport says it is tightening security after a man entered a ramp area through the airport's sewer system.
According to KOAT (http://bit.ly/ZqTnZi), 37-year-old Robert Mondragon emerged from a storm drain gate after walking several miles through a large storm drain Tuesday night.
Mondragon was taken into custody after he approached a freight area and was surrounded by workers who called police.
Airport spokesman Dan Jiron says the incident exposes a vulnerability that is being corrected . He wouldn't elaborate.
Jiron says Mondragon was disoriented, tired, thirsty and looking for a way out of the drainage system.
Police say Mondragon was arrested on suspicion of criminal trespassing. They say he had a large knife on him but didn't appear to have foul play in mind.