Raja along with Telecom Secretary Siddharth Behura, Raja's former personal secretary RK Chandolia and Swan telecom promoter Shahid Balwa are lodged in the Tihar Jail here.
The four were slated to appear before Special CBI Judge OP Saini through video-conferencing. But, due to technical glitches in the video conferencing system linking Tihar Jail and Patiala Court complex, they were produced before the judge in person.
The judge extended the judicial custody of Raja and three others on a plea by the CBI which contended that the probe into the case was yet to be completed. The investigating agency also submitted that the accused are "highly influential" and could tamper with evidence if released at this stage of investigation.
"All the four accused are remanded to judicial custody till Mar 31," the judge said.
Raja was arrested by the CBI along with Behura and Chandolia on Feb 2, while Balwa was arrested from Pune on Feb 8.