The 77-year-old died at the property in Wendover, Buckinghamshire after suffering serious injuries.
Police were called to the address at 5.25pm on Tuesday to reports of an assault, and the suspect was taken into custody.
The 77-year-old victim died at the £468,000 semi-detached property in Wendover, Buckinghamshire after suffering serious injuries
Today police stood guard outside the £468,000 semi-detached property, which was corned off by crime scene tape.
Detective Superintendent Kevin Brown of the Major Crime Team said: We are currently in the very early stages of this investigation. The people involved were known to each other and an arrest has been made.
“I would appeal to anybody who was in Gravel Hill this afternoon and believes that they witnessed anything that could help this investigation to please make contact with police if you have not already done so.”
DS Brown continued: “This is an area that is used extensively by dog walkers, and I believe that there will have been witnesses to this dreadful incident, or who may have seen the offenders leaving the area quickly.
“I would ask anybody who was driving or cycling in the area and has either a dash-cam or a head-cam to please check the footage between 3pm and 4.30pm, and get in touch if it has captured anything that may assist this investigation.