A Delhi court on Friday sought response from Sterling Biotech promoters following an Enforcement Directorate's plea to declare them fugitive economic offenders in connection with a Rs. 8,100-crore bank fraud case. Additional Sessions Judge Satish Kumar Arora issued the notices to the owners of the Gujarat-based pharmaceutical firm -- Nitin Sandesara, Chetan Sandesara, Dipti Sandesara, Hitesh Patel.