The decision came after the ministry received a report and recommendation from the Uttar Pradesh government on the recovery of PETN at the assembly premises on July 12.
The ministry has decided to hand over the probe into the recovery of explosives to the National Investigation Agency, the official said.
About 150 grams of PETN (Pentaerythritol tetranitrate) explosive was found wrapped in a paper close to the seat of the Leader of the Opposition, Ram Govind Choudhary, in the assembly on July 12.
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