Detectives in Dorset have launched a murder investigation following the death of a 66-year-old man after a stabbing. Dorset police said a 53-year-old man from Poole was initially held on suspicion of inflicting grievous bodily harm and later arrested on suspicion of murder. The force has referred the incident to the Independent Office for Police Conduct (IOPC) because of contact with the individuals involved the day before the incident. The victim sustained a stab wound to the abdomen on Sunday night in Poole. Police and the ambulance service attended the scene and the man was taken to hospital for treatment, but he died on Monday morning. Det Ch Insp Jez Noyce said the two men were known to each other. “A full and thorough investigation is under way to establish the full circumstances of what happened,” he added. “I am keen to hear from anyone who witnessed the incident and has not already spoken to police or anyone who has important information to assist my inquiries.” A cordon is in place at the scene while investigators carry out their examinations.