Five people belonging to Khairwar tribe were killed by a group of armed Maoists at Banda village in Rohtas district late Saturday evening.
"Security forces have been deployed at the village in view of the anger and tension," Rohtas Superintendent of Police Manu Maharaj told IANS over phone.
He said police was not taking any chance, fearing retaliation by people of the Khairwar tribe who have been opposing Maoists in the area.
Police suspect that the Maoists killed tribals in apparent retaliation to the killing of their top leader and self-styled commander Brinder Rana Yadav early this month.