A Brazilian national who operated a shop in Dukwarie, Cuyuni River, was shot and killed during a scuffle with a member of a private security firm, who intervened in an argument between the deceased and his wife on Tuesday. The dead man has only been identified as Nemar. Based on reports received, the now deceased man and his wife were involved in a heated argument when the security officer intervened as peacemaker, but instead, he was attacked by the now dead man who was reportedly armed with a cutlass.As the man reportedly advance towards the security officer, he discharged a round, fatally wounding the businessman. The gun was confiscated and the security officer was arrested. He is now assisting with the investigation.