Mr Vijayan also said Mr Mani had not tried to create "any hurdle" during the anti-encroachment drive on government lands in Idukki.
"Before law, there is no consideration as MLA or minister. There were complaints. A probe was held and no material was found warranting registering of a case against Mani," Mr Vijayan said during question hour in the state assembly.
Mr Mani had recently courted controversy when he allegedly made some offensive remarks against activists of 'Pembilai Orumai', a women's collective of plantation workers of Munnar.
Congress MLAs-- V D Satheeshan and P T Thomas-asked the government the reason for not registering a case against Mani for his comments against women workers and the IAS officer.
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