Assistant Superintendent of Police (Vigilance) Anand Joseph Tigga said a questionnaire was given to Kalmadi, and he replied in writing.
Additional Director General of Police (Vigilance) Niraj Sinha said Kalmadi was summoned for questioning under CrPC 160 (police officer's power to require attendance of witnesses).
Another senior police officer of the bureau said Kalmadi may have to be summoned again as he took some names, "which requires confronting him with them".
Kalmadi, who remained from 12.15 pm to around 2.30 pm at the Vigilance Bureau, said he answered whatever the officials asked.
On October 14, the bureau had arrested the Organising Committee Chairman of the 34th National Games S M Hashmi and former Sports Director P C Mishra in connection with the case. Hashmi and Mishra are in judicial custody now.
The Vigilance Bureau is investigating the scam pertaining to alleged financial irregularities in the purchase of equipment and other expenditure incurred to host the 2012 games in Jharkhand.