A polling official was found dead Wednesday on the banks of the Sone river near Sandesh Bazar in Bhojpur district.
The body of Ramakant Singh, an employee of tubewell department at Ara, was recovered from the river bank this morning.
Some black powder, suspected to be poison, was found near the body, superintendent of police Kim said.
Singh was a native of Koshihar village in Bhojpur district and due to retire from service in two months, Kim said.
Police is investigating the incident.