Two bikers were shot dead by their pillion riders over a dispute in Dahigana village under Dinara police station area, sources said.
The bodies have been sent for post-mortem and efforts were on to ascertain the identity of the victims, they said, adding the assailants fled after committing the double murder.
In a related incident, a man identified as Parasnath Prajapati was hacked to death and his brother was injured in a market place under Nasriganj police station area over a land dispute, police sources said.
Five persons were later arrested in the murder of the woman dancer, police sources added.