Police were called at around 10.40pm yesterday to reports of violence in Stretten Avenue, Cambridge.
A man in his 20s was taken to hospital with stab wounds and sadly died of his injuries.
A 26-year-old man from Cambridge has been arrested on suspicion of murder and remains in police custody.
Investigations are ongoing. Anyone with information about the incident should contact police on 101 quoting incident number 704 of yesterday (June 30).