Bihar Police on Saturday arrested Ruby Rai who had topped the Class 12 examination in the Arts stream conducted by the Bihar School Examination Board after she failed a re-test, reported the Times of India. "Special Investigation Team [SIT] of Bihar police probing into the Bihar toppers scam has arrested Rubi Rai when she finally appeared for a re-test at BSEB office," a police officer told the English daily.

Rai, 17, was asked to appear for a re-examination, first on June 3 and then again on June 17. However, she did not take the test citing health reasons. Investigators will produce her in court on Sunday.

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Earlier in June, the BSEB cancelled the results of Rai and another topper, Saurav Srestha, after they failed to answer questions about their subject in a video that went viral online. Both students are from VR College.

Following the controversy, the board asked all 14 toppers to appear for a re-test. The incident brought to light the possibility of mass cheating backed by a section of the education department in the state.