Arif Abdullah, a passenger who allegedly possessed the yellow metal, walked through the green channel, though only those passengers with nothing to declare are supposed to do so, AIU sources said.
Those who have possessions to declare are supposed to take the red channel.
Acting on a tip-off, a team led by AIU Assistant Commissioner Rishi Yadav intercepted Abdullah, a resident of Kerala, after he walked through the green channel.
A thorough frisking of Abdullah led to the seizure of the gold concealed in false pockets of his trousers.