Parliamentary Affairs Minister Shravan Kumar tried to intervene by pointing out that the issue raised by the RJD MLAs pertained to a central probe agency and not the state Assembly.
The RJD retained Araria Lok Sabha and Jehanabad assembly seats in the by-elections for three seats in Bihar.
The Enforcement Directorate is already probing the role of Lalu Prasad's eldest son-in-law Shailesh Kumar.
Lalu's three children--Tej Pratap Yadav, Tejashwi Yadav and Misa Bharti--have made it to the panel.
Tejashwi Yadav claimed the BJP-led NDA was planning to hold elections in Bihar by December this year and this was evident with senior BJP leaders as well as RSS chief Mohan Bhagwat undertaking tours of the state.
CBI judge SS Prasad also found another former chief minister Jagannath Mishra guility in the case pertaining to fraudulent withdrawal of Rs 37.62 crore from the Chaibasa treasury in the 1990s.
The RJD leader's advocate Chittaranjan Sinha said the court will hear his petitions likely on January 19.
Mahto and Yadav, who were reportedly charged with minor offences, were claimed to be serving Prasad as helper and cook.
Prasad's lawyer Prabhat Kumar told PTI that Prasad's lawyers will move the high court either on Friday or next Monday.
Prasad was sentenced to three-and-a-half years in jail and fined Rs 10 lakh by a special CBI court in Ranchi in a fodder scam case relating to fraudulent withdrawal of Rs 89.27 lakh from the Deoghar treasury 21 years ago
Live updates from the sentencing of former Bihar CM Lalu Prasad Yadav and 15 others in the Fodder Scam case.
The judge also informed Prasad about the contempt notices to RJD leader Raghuvansh Prasad Singh, Prasad's son and former Bihar deputy chief minister Tejaswi Yadav, Congress leader Manish Tiwari and RJD leader Shivanand Tiwari.
The Court had on December 23 convicted Lalu Yadav and 15 others in this fodder scam case and acquitted six others including another former Bihar chief minister Jagannath Mishra.
The pronouncement of quantum of punishment for the former Bihar CM was not done today due to the passing away of advocate Vindeshwari Prasad, as reported by ANI
CBI judge Shivpal Singh, on December 23, found Lalu and others guilty of fraudulently withdrawing Rs 89.23 lakh from Deoghar treasury by furnishing fake bills and vouchers related to fodder procurement between 1991 and 1994.
Lalu Prasad Yadav, former Minister of Railways and Chief Minister of Bihar has been imprisoned since last month after being convicted in the fodder scam case related to fraudulent withdrawal of Rs 89 lakh from the Deoghar treasury during 1991-94
The Lok Janshakti Party chief said Prasad had insulted stalwarts like Ambedkar by comparing himself with them and asked if the fodder scam was a scam of the poor or the powerful people
Lalu Prasad Yadav, Jagannath Mishra and 20 others are accused in the scam pertaining to fraudulent withdrawal of more than Rs 89 lakh from Deoghar Treasury between 1991 and 1994.
The case pertains to the alleged fraudulent withdrawal of Rs 84.5 crore from the Deoghar district treasury between 1994 and 1996 when Lalu was the Bihar chief minister.
The RJD Chief also spared no chance in taking a hit at Prime Minister Narendra Modi calling him a “desh ka badshah”
Bihar Deputy Chief Minister Sushil Kumar Modi on Saturday claimed the Enforcement Directorate, the CBI and the Income Tax department had "strong evidence" of benami transactions against RJD supremo Lalu Prasad and his family members.
Agency sources said the land is allegedly in the name of the family members of Lalu Prasad and a mall was supposed to be constructed here.
They said the statement of the former Bihar deputy chief minister was recorded by the investigating officer of the case at the ED office after he arrived there around 11 AM. Tejashwi Yadav left the ED office around 8:45 PM.
Yadav, who arrived at the headquarters at 11 am, was accompanied by his daughter Misa and did not speak to the media. He was taken to the investigation officer while Misa was asked to wait in the lobby, CBI sources said.
The CBI wants to question the former railways minister Lalu Prasad Yadav for a contract given for the maintenance of two IRCTC hotels in 2006. Tejashwi is also made an accused in the CBI FIR pertaining to alleged corruption in the deal.