Seven men have been arrested on suspicion of murder after a body was found in a well 7ft below ground in several feet of water.
Police were called to the scene - in the front garden of a large house in Warlingham, Surrey - on Friday afternoon.
The body of the white adult was discovered by two gardeners who were doing clearing work at the property, which is in an acre of grounds in an affluent area.
It has now been removed from the well by specialist officers.
Earlier, detective Chief Inspector Cliff Lyons said: "The body presents a number of logistical challenges.
"The well is 2ft in diameter, it is 7ft deep to the water line, and the water is approximately 4ft deep.
"We need a police marine diving team, with breathing apparatus, and we need to recover the body intact to preserve forensic evidence.
DCI Lyons told Sky News: "It is clear to me the body has been placed in the well as opposed to falling in the well and therefore it is a murder investigation."
He added: "It is not possible to ascertain with accuracy the gender of the body but, judging by the size, it is most likely to be an adult, not a child. The person is white.
"It's not been there for an extended period of time, it will be a matter of weeks at the most."
He appealed for anyone who had concerns about a person who has gone missing, especially if they had connections to that area, to come forward.
Anyone with information is urged to call police on 020 8721 4961 or Crimestoppers anonymously on 0800 555111.