Alipur court judge S Mondal passed the order on Iqbal, who was caught by the police on March 7 at Dehri-on-Sone in Bihar, where he had fled after the killing.
On February 12, an unarmed sub-inspector Tapas Choudhury was shot dead during a clash between Congress and Trinamool supporters at Hari Mohan Ghosh College in Garden Reach in Kolkata when nomination forms for student union elections were being distributed.
Iqbal was sent to CID custody for 10 days when he was produced before the court in the city on March 10 after being brought from Bihar and was later sent to judicial custody.