A major police hunt is now underway for the killer, who left his victim’s blood-soaked body in the woods in East Harling, Norfolk.
Officers rushed to the scene near Fiveways Junction at around 10.45am on Monday after the alarm was raised.
The pensioner, who has not yet been named, ‘died from multiple stab wounds to his head and neck’.
Ch Supt Mike Fawcett, from Norfolk Police, said: ‘I fully understand that residents will be shocked and concerned that a murder with this level of brutality can happen to an elderly man going about his daily business in our county.
‘The motive remains unclear and we are appealing for people who have noticed any unusual activity in the area recently.
‘Those who use the woodlands and footpath regularly, especially those who were there between 9am and 11am on Saturday, August 5 are urged to contact us.’
He added: ‘This was a brutal murder with no motive on a married family man. We really need as much information from the public as possible to help us with this investigation.’