A case has been filed against him at Bhagwanpur police station under section 25 (1)(B) and section 26 of the Arms Act for illegal possession of weapon and ammunition at his office, Bhagwanpur police station in-charge Vikram Acharya said.
The Vaishali police will soon seek his remand for interrogation in connection with registration of the case against him under the Arms Act, he said.
A Special Investigation Team (SIT) probing the scam had carried out raids at the college premises yesterday and recovered a country-made pistol and five cartridges from an almirah in the principal's office, Acharya said.
Rai was arrested from near the college premise on June 11 in connection with the scam involving several students of his college, including Arts and Science topper Ruby Rai and and Saurabh Shrestha respectively.
The scandal surfaced following a video featuring the toppers went viral in which Ruby and Saurabh were seen giving ridiculous answers to questions on their subjects.

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