NAGPUR: A police sub-inspector was killed and a constable was seriously injured during a gun battle with the Maoists in Rajnandgoan district of Chhattisgarh on Sunday.The encounter took place under Bakarkata police station limits of Rajnandgoan district on Sunday afternoon.“An exchange of fire took place between the Maoists and the DRG (District Reserve Guard) party of Rajnandgoan district police at around 1 p.m. near Bhave village under Bakarkata police station limits today. Sub-inspector Yugalkishor Verma was killed and one constable was injured ( during the gun battle) according to information received from Rajnandgaon District Superintendent of Police,” said a statement issued by the Chhattisgarh police headquarters.According to sources, the injured constable, Krush Kumar Sahu, also succumbed to his injuries when he was being taken to hospital. However, police officers did not confirm the news of his death. The encounter took place when the DRG’s E-30 team was carrying out a search operation in the area surrounding Bhave village. Sources said that the police party involved in the encounter had not returned to its base camp until evening.