Patna, the CBI on Monday collected all material evidence related to the alleged NEET-UG paper leak case from the Economic Offenses Unit (EOU) of the Bihar Police, which had been handling the investigation until the federal agency took over the control.

According to sources, a two-member CBI team, comprising a DIG and an SP rank deputy officer, reached the state capital from Delhi and headed straight to the EOU office. They will probably stay here for a couple of days.

The CBI sleuths, who discussed the case with EOU officials after formally taking charge of the investigation, also met officials of Shastri Nagar police station here, where the first case was lodged on May 5 after the arrest of several people in connection with the paper leak case, sources said.

The EOU arrested a total of 18 people in connection with the case, including the main suspect, Sikandar Yadavendu, his associates, some aspirants and his parents.

"The CBI collected all material evidence related to the EOU case. The evidence included a partially burnt questionnaire recovered from a house in Patna, mobile phones of those arrested, laptops, post-dated checks and reference questionnaires provided by National Bureau of Investigation. (NTA) tests," a source said.

The NTA conducted the NEET-UG medical entrance test on May 5 at 4,750 centers across the country and around 24 lakh candidates appeared.

CBI investigators met officials of Shastri Nagar police station since they first investigated the matter before handing it over to the EOU. Officials at that police station had recorded the confessions of several accused, sources said.

The central agency's sleuths are expected to record the statement of all those arrested in a day or two and may take them to Delhi for detailed interrogation by obtaining transit remand from a court here, sources said.

The CBI is also likely to file FIRs in connection with destruction of evidence and register disproportionate assets (DA) cases against some of the accused who are public servants, they said.

"A case may be registered against the arrested accused Sikander Yadvendu, a junior engineer in Danapur Municipal Council. He has reportedly acquired huge assets which are disproportionate to the known source of income of him," a source said.

Yadvendu has a history of involvement in criminal activities and had served a prison sentence, he said.

Meanwhile, the political pot continued to boil in Bihar over alleged irregularities in the conduct of the NEET exam.

The opposition RJD on Monday shared several photographs of accused Amit Anand, Nitish Kumar and relatives of Lutan Mukhiya with leaders of the ruling NDA and demanded a thorough probe into the “links” between the two parties.

Some people associated with the gang of Sanjeev Kumar alias Lutan Mukhiya were arrested in connection with the case.

Bihar Deputy Chief Minister Vijay Kumar Sinha last week claimed that the main suspect arrested in the NEET “paper leak” is linked to officials associated with RJD leader Tejashwi Yadav.