A murder investigation has begun after a 77-year-old man died following reports of an assault at a house.
Police were called to Aylesbury Road in Wendover, Buckinghamshire, at about 17:25 BST on Tuesday.
Thames Valley Police said the victim died at the scene from his injuries.
A 36-year-old man from Aylesbury has been arrested on suspicion of murder and has been taken into police custody. The force said the two men were known to each other.
Investigating officer Det Supt Kevin Brown said there would be some "disruption in the area" over the next few days as the investigation continued.
Police have appealed for anyone with information to come forward.