The LJP chief, an ally of Prasad before he joined the NDA ahead of the 2014 polls, said the CBI action was in accordance with the law.
To a question on whether Bihar Chief Minister Nitish Kumar should snap ties with Prasad, Paswan said it was for the JD(U) chief to answer.
When Prasad was sent to jail in a fodder scam case the NDA was not in power at the Centre, the minister said as he rejected the charge of "political vendetta".