The searches were conducted at the premises of the son of RJD MP and former union minister Prem Chand Gupta, and few other businessmen.
However, shortly after Lalu's tweet, RJD spokesperson Manoj Jha appeared to have launched a damage control, saying the reference to "new alliance partners" was an allusion to how the BJP had picked up Income Tax department and CBI as its partners to harass political rivals.
The Bharatiya Janata Party leaders had alleged Lalu Prasad was connected to hundreds of "benami" properties. "There are allegations of Benami deals worth about Rs 1,000 crore and subsequent tax evasion", a senior official told the news agency.
Along with Lalu Prasad Yadav, the raids are being conducted on several others in connection with benami land deals worth 1,000 crore.
Prasad rapped the BJP in yet another tweet for "sensing an opportunity to destabilise the Grand Alliance government in Bihar" and asserted that the coalition was "intact".
Rashtriya Janta Dal chief Lalu Prasad Yadav vented his anger on the Union Government through his Twitter handle.
The minister said that Misa Bharti, daughter of Lalu Prasad Yadav, was unsuccessful to reveal properties details in her election affidavit, she is Rajya Sabha MP. "Lalu is not scared of BJP-backed media and government puppets".
Pippa Middleton prepares for wedding
These final days will be a juggling act for Pippa, who will want to oversee the details and make sure everything goes to plan. Online, Kate Middleton's younger sister got into wedding day shape by taking part in a strict bridal boot camp.
"Lalu's official residence was the address of the owners of the firms allegedly floated by his family members".
Tweeting in reaction to the raids, Lalu Yadav said, "RSS-BJP are scared of Lalu's name".
Union minister Ravi Shankar Prasad had claimed the companies owned by Lalu Prasad's family for the goal of land transactions had no employees, no business activity and no turnover. The central government is targeting us.
According to Prasad, it has now dawned on the opposition that the BJP is winning successive elections and people's faith in Prime Minister Narendra Modi is increasing because of the enhanced ethical quotient in governance and decision-making. He had also alleged that the state's biggest shopping mall that is coming up in Patna is part of such questionable transactions.
Congress leader P.C. Mishra said the IT raids are nothing new against opposition leaders.
Claiming that the Central Government was acting out a "political vendetta", he said the raid was being held to "silence the voice" of his father.