Unidentified gunmen shot dead Rashtriya Janata Dal (RJD) leader Laxmikant Yadav on Saturday night in Bihar's Bhagalpur district, police said.
Yadav was the Bhagalpur district president of the state's main opposition.
According to the Bhagalpur District Superintendent of Police's office, unidentified criminals shot dead Yadav. "No arrest has been made in this connection," a police source said.
RJD supporters held a protest by blocking a road and demanded immediate arrest of the killers.
Earlier this month, Reyazul Khan, husband of the Bhagalpur ward 34 councillor, was shot dead in Patna.