The judge directed the central probe agency to file the final report by June 7.
The CBI had filed filed a supplementary charge sheet against three accused-two candidates, Ashok Kumar and Babita, and Bhola Yadav, who was the personal secretary to Lalu Prasad when he was the railway minister, in March.
The court had on February 28 granted bail to Prasad’s wife and former Bihar chief minister Rabri Devi and their daughters Misa Bharti and Hema Yadav in the case.
The CBI has alleged that several people were appointed to Group “D” positions in various zones of the Indian Railways from 2004 to 2009 in return for land parcels they sold at heavily discounted rates to the family members of Prasad, who was the railway minister in the UPA I government.
The Enforcement Directorate (ED) is also probing the case over alleged money laundering.