A Delhi court on Thursday extended the judicial custody of former Telecom Minister A Raja and three others, arrested for their alleged involvement in the 2G spectrum allocation scam, till March 17. Raja appeared before the court through video conferencing while his former Personal Secretary R K Chandolia, former Telecom Secretary Siddarth Behura and Swan Telecom promoter Shahid Usman Balwa were present in person after the expiry of their judicial custody. Special CBI Judge O P Saini extended the judicial custody of the trio after hearing their arguments. As the proceedings started, Raja greeted the judge and marked his presence, after which the court extended his remand by two weeks.