The National Testing Agency (NTA) has cancelled the NEET-UG 2026 examination, which took place on May 3, 2026, due to serious allegations of a possible paper leak and the circulation of a 'guess paper' that significantly overlapped with the actual exam questions. Following inputs from various states and investigative agencies, the NTA, with the approval of the Government of India, decided to cancel the examination to maintain the integrity of the testing process. Investigations revealed that a 'guess paper' containing over 400 questions was circulated, with approximately 120 questions matching the actual exam, raising concerns about organized malpractice. The NTA has referred the case to the Central Bureau of Investigation (CBI) for a thorough inquiry into the alleged leak and its connections to coaching networks across states, particularly in Rajasthan and Uttarakhand. As a result of the cancellation, the NTA assured that no new registration or fees would be required for the re-examination, which will be conducted using internal resources. The decision has sparked political criticism, with opposition leaders calling for accountability and further investigation into the examination framework.