The NEET-UG 2026 paper leak scandal has thrust two teachers into the national spotlight — one accused of masterminding the breach, the other credited with exposing it. The Central Bureau of Investigation (CBI) has arrested Pune-based chemistry professor PV Kulkarni, naming him the alleged 'kingpin' of a conspiracy that affected nearly 23 lakh students across India. Meanwhile, a teacher from Sikar, Rajasthan, has emerged as the whistleblower whose persistence triggered the nationwide probe.

The Alleged Kingpin: PV Kulkarni

According to the CBI, Kulkarni allegedly had access to the NEET-UG examination papers through his involvement in the process on behalf of the National Testing Agency (NTA). Investigators allege he misused that access to pass on questions to students ahead of the 4 May examination. The CBI has described his role as central to the conspiracy, though the full extent of the alleged network is still under investigation.

This comes amid a broader pattern of examination integrity failures in India, where high-stakes competitive tests have repeatedly faced allegations of leaks and malpractice. The NEET-UG, which serves as the sole gateway to undergraduate medical admissions, is among the most consequential such exams in the country.

The Whistleblower: A Sikar Teacher's Late-Night Alert

Just hours after the examination concluded on 4 May, a teacher associated with a reputed coaching institute in Sikar — a town synonymous with India's competitive exam preparation industry — walked into the Udyog Nagar police station at around 1:30 am carrying a suspicious set of documents. The papers initially appeared to be a routine handwritten 'guess paper,' common ahead of major examinations.

However, on closer inspection, the teacher found the document — reportedly around 60 pages — contained approximately 90 chemistry questions that matched the actual NEET paper, along with several biology questions. That discovery transformed suspicion into a formal complaint.

How the Complaint Escalated

Local police reportedly asked the teacher to submit a written complaint but did not register a formal FIR at that stage. He also approached media contacts, but his claims initially drew little attention. Undeterred, on the night of 7 May, he sent a formal email to the NTA, offering to surrender his mobile phone for forensic examination and urging an independent probe. He warned that the futures of millions of students were at stake.

That email proved decisive. The NTA reportedly alerted central agencies, prompting Rajasthan's Special Operations Group (SOG) to begin an investigation. The case was subsequently transferred to the CBI. Notably, investigators found no evidence linking the Sikar teacher to the alleged leak network; documents had reportedly reached him only after the exam had concluded.

Raids, Arrests, and What Investigators Found

Over a 24-hour period, the CBI conducted raids at multiple locations across the country, seizing crucial documents, electronic devices, and mobile phones, all of which are undergoing forensic and technical analysis. A total of eight accused have been arrested from Jaipur, Gurugram, Nashik, Pune, and Ahilyanagar. Five of the accused were produced before a court on Thursday and remanded in custody for seven days.

Investigators are now working to determine the geographical spread of the alleged leak network across states, how widely the paper circulated, and whether a larger organised operation was behind the breach. The CBI's findings from forensic analysis are expected to provide further leads in the days ahead.