A man has been arrested on suspicion of murder after a woman's body was found at a National Trust estate.
Thames Valley Police found the body in woodland on the Watlington Hill estate in Oxfordshire just before 6pm on Friday evening.
The victim is believed to have been in her 60s.
Officers are now appealing for anyone who saw a man behaving strangely near the Fox and Hounds pub in the Christmas Common area at around 3.30pm to get in touch.
Anyone who saw anything suspicious in the Watlington Hill area at around 5.50pm is also urged to come forward.
Senior Investigating Officer, Detective Superintendent Craig Kirby of the Major Crime Unit, said on Friday: "We have tonight launched a murder investigation following the discovery of a woman's body in woodland earlier this evening.
"My thoughts remain with the deceased woman's family at what must be a hugely distressing time.
"We are carrying out a thorough investigation to piece together what has happened to lead to this woman's death.
"Officers have located and arrested a man on suspicion of murder, he is currently undergoing hospital treatment for serious injuries.
"We are appealing for the public's help in our investigation and we are requesting anyone with information to please come forward.
"We are particularly keen on speaking to anyone who may have seen anything suspicious in the Watlington Hill area before or around 5.50pm this evening.
"At this stage we are also tentatively linking this incident to reports of a man acting suspiciously near the Fox and Hounds pub in the Christmas Common area of Watlington at around 3.30pm this evening.
"As such we are also asking anyone who may have seen a man acting suspiciously in this area or anyone who believes they have information that they think could assist us in our investigation to please get in touch.
"Anyone with information should call 101 quoting reference 1300 of 23/10/20.
"If you wish to report anonymously you can do so by calling the Crimestoppers Charity on 0800 555 111."