LJP leader Suresh Paswan, who was going with his cousin Sunil Paswan and some supporters, were waylaid in Dubat Tola by the assailants who then fired killing both, Additional Superintendent of Police Manoj Yadav said.
The deceased LJP leader's wife Maya Rani is 'mukhiya' of Kachar panchayat where she is seeking re-election in on-going panchayat polls.
Sunil Paswan is a candidate for member of Kachar panchayat.
The attackers also burnt a car, a mini truck and a motorbike moving with the deceased LJP leader.