A release from the Guyana Police Force Public Relations Department said the incident occurred around 04:00 hrs today at Kurtaka Village, in the Cuyuni River.
The police say their initial investigation revealed that the suspect was beating his wife and her father Solomon Lewis when his brother-in-law, Marvin Lewis intervened, the suspect became annoyed and armed himself with a cutlass and fatally chopped the elder Lewis.
According to the Police, he then turned his attention to his brother-in-law and injured him, after which he fled the area by boat.
The Police has since dispatched a team of investigators to the crime scene to bring out the body and the injured man.