The main witness of a murder for which Lok Janshakti Party (LJP) MP Surajbhan Singh was sentenced to life imprisonment was shot dead along with his grandson by unidentified people in Bihar's Begusarai district, police said on Monday.
Nago Singh and his grandson were killed near Barauni in Begusarai, about 126 km from Patna, late on Sunday.
Additional Director General of Police (Headquarters) Neelmani said that police officials have been asked to rush to Begusarai since the incident has sparked tension in the area.
Last year, Surajbhan Singh was convicted and sentenced to a life term for the Jan 16, 1992 murder of Rami Singh, a resident of Mathurpur village. Nago Singh, in his mid 70s, was the prime witness in the case.
Police sources in Begusarai said Nago Singh had received death threats before the pronouncement of judgement in the case in June 2008.
Surajbhan Singh is currently out of prison following the acceptance of his bail petition by the Patna High Court. He faces several criminal charges, including those of murder, extortion, kidnapping and looting.
Last year, he was accused of the murder of additional public prosecutor Ramnaresh Sharma, 55.