The Delhi High Court has set aside the Centre's order cancelling the Overseas Citizen of India card of a US-based professor, saying the notice lacked specific details or evidence supporting the allegations of "anti-India activities." The court ruled that the professor was deprived of a fair chance to present a defense, violating procedural fairness and principles of natural justice. The court has directed authorities to issue a fresh notice with specific grounds and allow the professor to respond before making a decision on his entry into India.