New Delhi - The NIA has so far arrested six persons in the case this week, totalling 10 so far.
NIA investigators later found that Muhammad Ali is a member of the PFI and was earlier charge-sheeted by Kerala Police in 'Professor's Palm Chopping Case' but got acquitted after trial in 2015.
During searches, two hard disks, one tablet PC, eight mobile phones, six SIM cards, one digital video recorder and five DVDs were seized besides various documents including bank passbooks, credit and debit cards, travel documents and identity documents of the accused.
The NIA arrested two more accused on July 31, identified as Mohammed Shafi P. and Abdu P.T. - for playing similar roles in the crime.
Involvement of PFI members in the gold smuggling case has given a new twist to the case and NIA investigators suspect major conspiracy as the PFI now claims to have its units in 22 states.
The gold smuggling case first surfaced when PS Sarith, was arrested by the Customs on July 5 when he allegedly was facilitating the smuggling of 30 kg gold in a diplomatic baggage to Thiruvananthapuram.
The case became murkier when the name of Swapna Suresh, a former employee of the UAE Consulate and later employed with the Kerala government's IT Department, came to light. Her links with senior IAS officer M. Sivasankar came up later during the investigation. Sivasankar was Principal Secretary to the Chief Minister and Information Technology Secretary before he was removed from the post after the racket was busted.
Another accused, Sandip Nair of Kochi, was arrested on charge of direct involvement in the smuggling. Swapna and Sandip were arrested by the NIA from Bengaluru.