The three -- retired army personnel Bhanvar Singh, 55, former village head Satya Prakaskh, 72, and Sundar Singh, 45 -- were killed at Bharau village on Monday night.
Protesting the killings, the villagers refused to allow the bodies to be taken for post-mortem.
"Five teams of police have been formed to investigate the case," Senior Superintendent of Police Prabhakar Chaudhary said.
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