Additional Chief Judicial Magistrate (ACJM) Om Sagar rejected the bail petition of Yadav after hearing both prosecution and defence.
Yadav's counsel Satya Narayan Singh and Qaiser Sarfuddin pleaded that his client had been booked for alleged destruction of evidence and not for murder and for that he should be granted bail.
District Prosecution Officer Triloki Nath Mishra opposed the bail petition.
Yadav and his wife suspended JD(U) MLC Manorama Devi's bodyguard Rajesh Kumar were arrested on May 8 for allegedly helping the accused escape.
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Meanwhile, the District and Session Judge Sajal Mandalwar today sought the case diary and proceedings of a lower court (ACJM court) in connection with the bail plea of Manorama Devi.
Manorama Devi's counsel Satya Narayan Singh and Qaiser Sarfuddin pleaded with the court for bail for their client on the grounds that she did not drink or was caught drinking by the police during raid at her residence.
The court had sent her to 14 days judicial remand.