Patiala (December 08, 2011): Sikh Students Federation has raised it’s grave concern over Supreme Court of India’s decision in the case of enforced disappearance of three relatives of Professor Devender Pal Singh Bhullar and has term the decision as most unfortunate. Supreme Court yesterday set aside the Punjab and Haryana High Court order directing CBI inquiry into the matter, on mere ethical ground that High Court judge ordering the inquiry had certain reason for prejudice against one of the accused police officer.