A racket offering "confirmed" seats in medical courses spanning four states have been detected after the arrest of eight people by the Central Bureau of Investigation yesterday. Each seat costs Rs 20 lakh, of which 5 lakh is given to the person who impersonates the student and solves the NEET (the National Eligibility cum Entrance Test) question paper, said sources in the agency. The rest is shared by the middlemen and others, sources said.