"It is hereby clarified that the investigation conducted by Customs has not unearthed any connection between the smuggling racket and funding of jihadi operations, nor has any information to the effect that carriers were lured in the name of funding jihadi operations been received by the department," Customs Commissioner K N Raghavan said in a release.
"The focus of investigation is only on smuggling and related economic offences and that we share the details of investigations in major cases with other related agencies," he said.
The officials had said that 28-year-old Jabin K Basheer, while working as Immigration Assistant under Intelligence Bureau (IB) from 2011 to April 2015, allegedly helped Naushad -- kingpin of the racket which is suspected to have smuggled 1,500 kg of gold from Dubai through the airport in 16 months.
His brother, Nibin K Basheer (25) and father A K Basheer (52) were also arrested by the Special Intelligence and Investigation Branch of Customs for allegedly helping Jabin in the smuggling. They belong to Muvattupuzha.
Noushad, who is also a native of Moovattupuzha, was arrested on June 8 and is presently lodged in the jail here.
Customs officials have indicated more arrests would be made in the case in the coming days.