“Choudhury initially told us that he was pursuing his MBBS course from a medical college in Ujjain. However, it turned out that he was lying all this while, as he was a second-year student from a medical college in Indore. He was trying to mislead the investigation,” said the officer adding that a team will be sent to the college in Indore to verify his claims.

The police had busted the medical entrance exam racket on January 8 and arrested Choudhury and three of his associates. From Choudhury, police recovered a 23-page question booklet of the All India PG Medical Entrance Examination 2012. A candidate, Dr Amit Punia, who had taken Choudhury’s help to clear the exam, was also arrested. Police had sought a seven-day extension of their remand on Tuesday for further interrogation.

Moreover, investigating officers from the Crime Branch also confirmed that the other five candidates involved in the scam, and who had got away with appearing in the exam, have been identified. “The AIIMS authorities have told us that the candidates hailed from reputed institutions. We have identified them and will nab them soon,” said a senior police officer investigating the case.

The candidates, police said, appeared for the exam in different Delhi and Noida centres and not everybody was from the Noida’s Sector-28 centre, from where Kapil Kumar and Krishan Pratap Singh, Choudhury’s associates, and Dr Amit Punia were arrested.