A prime witness in the killing of BJP leader Visheshwar Ojha was shot dead on Friday in Bihar's Bhojpur district allegedly by unidentified miscreants, police said.
Another man who raised alarm an following the shooting also sustained bullet injuries, he said.
Visheshwar Ojha was gunned down by masked assailants between Sonvarsha and Parsaura villages in Shahpur Police Station area of Bhojpur district in February 2016.
The BJP's Bihar vice-president had unsuccessfully contested Assembly election in 2015 from Shahpur constituency.
"Today, when Kamal Kishore Mishra was returning home with fodder for his cattle around 7 am, some unidentified men shot him. When Amarkant Mishra, another villager, raised an alarm seeing the miscreants flee the area, he was shot at, too," Superintendent of Police Awakash Kumar said.
The injured villager, who is undergoing treatment at Ara Sadar Hospital, said three men had attacked them, the SP told reporters.
"Kamal Mishra, who had completed his testimony earlier this year, was an eyewitness in the Ojha killing case. His security cordon was removed at his request following the testimony," he said.
Several senior police officers, including Additional SP (Operations) Nitin Kumar, have reached the spot to take a stock of the situation, Kumar stated.
"We are conducting raids to nab the culprits. Five empty cartridges have been recovered from the site of the incident," he added.
Bhuwar Ojha, the brother of the deceased BJP leader, claimed the incident will create panic and fear among the remaining witnesses.
"Kamal Kishore's death will adversely affect the trial in the case," he said.
Get the latest election news, live updates and election schedule for Lok Sabha Elections 2019 on ndtv.com/elections. Like us on Facebook or follow us on Twitter and Instagram for updates from each of the 543 parliamentary seats for the 2019 Indian general elections.