A man has been arrested on suspicion of murder after the body of a woman was discovered at a National Trust estate.
Police found the body in woodland on the Watlington Hill estate, Oxfordshire, just before 18:00 BST on Friday.
The arrested man is being treated in hospital for serious injuries.
Thames Valley Police said it was linking the murder to reports of a man seen acting suspiciously near a pub a few hours earlier.
The victim is believed to be in her 60s, the force added.
Officers have appealed for anyone who saw a man behaving strangely near the Fox and Hounds pub in the Christmas Common area of Oxfordshire at about 15:30 to get in touch.
Anyone who saw anything suspicious in the Watlington Hill area at about 17:30 has also been asked to contact detectives.
Det Supt Craig Kirby said: “We are carrying out a thorough investigation to piece together what has happened to lead to this woman’s death.”