Kochi: Former principal secretary to Chief Minister, M. Sivasankar has appeared again at the National Investigation Agency (NIA) office in Kochi.
The NIA has started interrogation in the case pertaining to gold smuggling.
The probe team had found digital evidence from Swapna Suresh and Sandeep, the main accused in the gold smuggling case. Swapna has been in NIA custody for the last two days.
Based on this, the investigation team is questioning Sivasankar.