more-inJoint Commissioner, Customs, Aneish Rajan, on Wednesday expressed concern that international smuggling networks appeared to be increasingly recruiting Kerala youth as carriers. He said a large segment of persons caught as couriers were Kerala youth. Some were independent operators seeking to subsidise their air travel by smuggling in small quantities of bullion. Air travel manifestos and passport details were often a giveaway. Investigators also resorted to predictive profiling to flag potential carriers among air passengers..