A Gaya court on Thursday rejected the anticipatory bail plea of suspended JD (U) MLC Manorama Devi.
Devi, who is accused of violating prohibition law, was on Tuesday sent to 14-day judicial custody.
She, however, blamed the Bharatiya Janata Party (BJP) for falsely implicating her under political conspiracy.
Devi is the mother of Rocky Yadav, the main accused in the sensational road rage killing of a Class 12 student on May 7. She had been evading arrest after arrest warrant was issued against her.
The district administration had declared her a proclaimed offender after she went underground following institution of case against her under the new Excise Act.
A few bottles of Indian made foreign liquor had been seized during raids at her residence to nab her son.