Cambridgeshire police are investigating a triple stabbing in the early hours of Saturday (17 August). Police were called at about 12.20am with reports of violence in Freston, in the Paston arear of Peterborough. An 18-year-old man and two 17-year-old boys were taken to hospital with stab wounds. One of the 17-year-olds has since left hospital, but the two others remain in a serious condition. No arrests have been made. Police said a thorough investigation is being conducted and there is an increased police presence in the area. Officers are treating the stabbings as an isolated incident. Anyon…