Andhra Pradesh high court had on Thursday set aside another court's order granting the agency further custody of Vijay Sai, saying that it should approach the regular court.
The agency moved the special court for CBI cases on Friday, which remanded Vijay Sai to further custody from January 14 to 16. He will have to be produced in the court on January 17.
The court has also made an `initial recommendation' to Hyderabad district collector to accord a special class prisoner status to Vijay Sai, lodged in Chanchalguda Jail in Hyderabad since the arrest on January 2.
The CBI had told the court that Vijay Sai had revealed some incriminating facts during the interrogation, but he was yet to be confronted with some vital information.
The CBI's first information report against Jagan and 73 others (including Vijay Sai) alleges that several firms, who had been granted favours by the state government, invested in Jagan-promoted companies at a high-premium -- by way of quid pro quo -- during the time his father, the late Y S Rajasekhar Reddy, was the chief minister of Andhra Pradesh.