The Armed Police Battalion detained the guard, Ibrahim Khalil, for his suspicious movement and found the smuggled gold in a body search on Thursday afternoon.
Kamal Uddin, the passenger, was arrested on information given by Ibrahim. Kamal arrived at the airport in a Biman flight from Saudi Arabia, said Mohammad Ziaul Haque, an additional superintendent of police at APBn.
Ibrahim, a native of Noakhali, was taking the gold out of the airport in exchange for Tk 6,500 per bar after Kamal of Feni smuggled the yellow metal in, according to Ziaul.
A case was filed against them at Airport Police Station.