Since it was a sensitive matter the chief minister must order a crime branch probe into the incident, Odisha Pradesh Congress Committee (OPCC) general secretary Arya Kumar Gyanendra said in a statement here.
The Congress leader also demanded arrest of the MLA from Cuttack district for allegedly accepting bribe for allotment of work under the MLA LAD fund.
The MLA claimed that the voice on the audio tape was not his.
"Some of my my political rivals might have planted the story," the MLA told the television channel.