The Centre was asked by the Allahabad high court on Thursday to respond within three weeks on a petition seeking a probe into allegations levelled by activist Arvind Kejriwal against Robert Vadra.
Jail Superintendent P P Singh said Ashish will be kept in a separate barrack in the jail due to security reasons.
It dismissed a petition filed by the UP government challenging an Allahabad high court order staying investigations into cases against him.