"IT department and enforcement directorate should conduct an inquiry against Yadav Singh, but to expose his political patronisers, a CBI probe must be conducted," BJP's state president Laxmi Kant Bajpai told reporters here.
"The diary recovered from Yadav Singh has the number of all of his contacts," he added.
He said that Yadav may have been removed from the post, but he has not been suspended yet.
A raid was conducted at the residence of Singh on November 26 whose wife Kusumlata was the director of a company Meenu creations, which manufactures designer clothes.
