The Supreme Court on Monday recorded that the National Forensic Science Laboratory (NFSL), Gandhinagar, has found the leaked audio clips purportedly implicating former Manipur Chief Minister N Biren Singh in the 2023 ethnic violence to be tampered with.

A bench of Justices Sanjay Kumar and Alok Aradhe said the NFSL’s report concluded that the audio files showed signs of editing and manipulation, rendering them “not scientifically fit for forensic voice comparison.”

“Consequently, no opinion regarding the similarity or dissimilarity of the speakers in the questioned and the controlled clips can be offered,” the bench noted, quoting directly from the report.

The apex court observed that, according to the laboratory’s findings, the leaked recordings were not original source files. They had

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