Leader of opposition Nand Kishore Yadav raised the issue of registration of FIR against the minister during Zero Hour in the Assembly and demanded his resignation till he was cleared of the charges.
Chief Minister told reporters that action would be taken if the minister was found guilty.
Besides this, the opposition leader also spoke about lodging of FIR against a JD(U) MLA in Bhakhtiyarpur and another one in Gopalganj for allegedly seeking extorion money.
This was protested by RJD members in the House.
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Minister in-charge for Home Vijay Chaudhary dismissed the opposition charge and said registration of complaints against a person like a minister proves that the government promoted transparency and did not spare even higher ups.
But, this did not satisfy the BJP members who trooped into well and shouted "Return of Jungle Raj II" in Bihar.
Sahni, who is Minister for Animal Husbandry and Fishery, defended himself.
Sahni was held hostage in the college for nearly three hours by villagers who fought pitched battle with his supporters that day. The minister was later escorted by police to his home.