The Air Intelligence Unit of the Mumbai Customs has noticed a new modus operandi by gold smugglers. Passengers have been arrested for concealing the yellow metal in laptops, wrist watches, speakers, ladies' hair pins, Bigen hair spray bottles, and in the handles of trolley bags.

In the past four days, the AIU has arrested seven people for smuggling gold worth more than Rs 3 crore into Mumbai. "Most of our cases are detected  with the help of advanced intelligence and the suspicious behaviour of passengers crossing the green channels," said an officer.