A Gurgaon court on Friday extended the judicial custody of Shivraj Puri, the alleged mastermind of the 400 crore rupee Citibank fraud, and co-accused Sanjay Gupta, till February 11.The two are currently lodged in Bhondsi jail. Chief Judicial Magistrate D N Bhardwaj extended the custody by 14 days. He announced the extension using the video conferencing facility at the hearing.Puri, a Relationship Manager employed with Citibank's Gurgaon branch, allegedly duped high networth individuals (HNIs) and corporates by collecting funds from them on promise of unusually high returns.Gupta allegedly arranged funds for Puri and in lieu got commission of 20 crore rupees.