It seems that repeated seizure of gold in varying quantities and the innovative ways in which carriers hide them, have made the Air Intelligence Unit (AIU) at Chhatrapati Shivaji International Airport all the more alert. In a similar incident on Wednesday, the officials arrested a passenger Mohammad Althaf Moidin (30), travelling from Riyadh, and seized 10 gold bars worth over Rs 29 lakh from him. He was scheduled to leave for Mangalore via a Jet Airways flight.