Koda was interrogated on camera Monday so that his statements are recorded on video for proof while the IT department and Enforcement Directorate officials continued searches in cities across the country for the third day Monday.

"Koda is not fully cooperating in the investigation," IT department's Director General for Investigations Anjani Kumar told reporters here, adding search operations are still going on at some places.

IT sources said Koda had provided information about investments made at different places, the network used to invest money and people involved in the illegal transactions.

An official press release Monday said the IT department is continuing its search and seizure operations under provisions of the Income Tax Act and has summoned six people for questioning.

The six who have been asked to appear before the department Nov 6 are Vinod Kumar Sinha, Sanjay Chaudhary, Devendra Mukhiya, Basant Bhattacharya, Manoj Punamiya and Anil Bastawde. Sinha and Chaudhary are close associates of Koda.

"If they fail to appear on the said date, the department will be constrained to take strict legal actions as permissible under various laws," the statement added.

Both Sinha and Chaudhary have not yet appeared before IT officials. On Saturday, IT officials said legal action would be initiated if they did not report by Sunday evening. Airport authorities have now been alerted so that they do not flee the country, officials said Monday.

The IT department, which is probing a disproportionate assets allegation against Koda and his associates, Saturday conducted raids at 70 places in eight cities and discovered documents relating to illegal transactions worth Rs.2,000 crore.

The searches continued Sunday and Monday to gather evidence of corruption against Koda and his associates with searches being conducted at seven new places Monday, officials said.