Thiruvananthapuram: The customs officials questioned former IT secretary N Sivasankar for nine hours in connection with the Kerala gold smuggling case.

On Tuesday morning (July 14), customs officials had called on Sivasankar at his residence in Poojappura and served him notice to appear for questioning. He turned up at the customs office by 5.15 pm.

At 2 am on July 15, the customs completed the questioning and  let off Sivasankar. During the questioning Sivasankar spoke about the accused Swapna Suresh, Sarith Kumar and Sandeep Nair, who were arrested in connection with the case.

According to sources, the main intention behind questioning Sivasankar was to find out his knowledge about the gold smuggling.

It is also reported that Sivasankar admitted that he knows Swapna and others but didn't have any information about gold smuggling.

Reports said that Sivasankar will again be questioned by customs officials and National Investigation Agency (NIA) in the coming days.