New Delhi: Chief Minister of Tamil Nadu C Joseph Vijay said that the cancellation of NEET-UG 2026 exam exposed “structural flaws” in the system and demanded cancellation of the exam.Vijay said that governments in Tamil Nadu have “consistently and unanimously” opposed NEET since its introduction, arguing that it has “severely disadvantaged students from rural areas, government schools, Tamil medium backgrounds and socio-economically disadvantaged families”. He called on states to allow admission to medical students on the basis of class 12 marks.The National Testing Agency on Tuesday canceled the May 3 NEET-UG exam following allegations of paper leak. The decision has left over 22 lakh medical aspirants uncertain about their future and triggered widespread protests demanding accountability and resignation of Education Minister Dharmendra Pradhan.CBI arrested Mangilal Biwal, Vikas Biwal and Dinesh Biwal from Jaipur, Yash Yadav from Gurugram and Shubham Khairnar from Nashik. Officials said that more arrests are likely as the scope of investigation increases in many states.“Big people are protected and the common man is harassed,” said an accused in Jaipur while being taken to Delhi for questioning.The investigators seized mobile phones, laptops and other digital devices during the raid. The devices will be forensically examined to find out how the alleged question papers were circulated before the exams.The Special Operations Group of the Rajasthan Police, which first started investigating the case, said the “guess letter” came from a medical student from Sikar studying in Kerala. Officials alleged that the material was shared among coaching students and hostel residents before being spread to candidates in Jaipur and surrounding districts.Officials questioned more than 150 students, parents and coaching colleagues across Rajasthan. Investigators suspect that the leak may have originated in Nashik before passing through Gurugram and Rajasthan.Political tension also increased after Congress and Trinamool Congress leaders alleged that some of the accused had links with the BJP. Former Rajasthan Chief Minister Ashok Gehlot claimed that Dinesh Biwal was a BJP functionary and accused the state government of trying to suppress the case. BJP leaders denied the allegations, with state vice president Mukesh Dadhich saying Dinesh did not hold any post in the party.Meanwhile, protests broke out in several states, where Congress workers burnt effigies of Pradhan and student groups including NSUI, AISA, ABVP and SFI, demanding strict action and greater transparency in competitive examinations.