Man's body found in well was dumped there 2 years ago Body found on Friday by two gardeners at house in Warlingham, Surrey Police reveal victim was seriously assaulted before being dumped there Seven men aged between 21 and 27 are arrested on suspicion of murder The body of a mystery man found down a well by gardeners last week was dumped there two years ago, police revealed today. The corpse is of a white man who was assaulted and bound before being thrown down the well in Warlingham, Surrey, tests have confirmed - although a cause of death could not be established. Detectives have vowed to find the killers, and a forensic team will be at the scene for another month as they hunt for clues. The well has been partly demolished and water samples taken for analysis. Probe: Police have launched a murder investigation after the body of a man was found down a well in Surrey Grim task: Officers from the Underwater and Confined Space Search Team during the recovery operation Aerial view of the scene: The well was 2ft wide, 7ft deep and the water was approximately 4ft deep A Metropolitan Police spokesman said: "A post mortem examination which took place on Sunday, 17 November did not provide a cause of death and further tests are being conducted. However, the examination did reveal that the body - confirmed to be of a white male - has sustained injuries consistent with an assault prior to being placed in the well. Cleaned: A police specialist diver being washed down after leaving the scene It has also been established that the body was bound up before being placed in the well by a third party. Detectives now believe the body had been in the well for around two years. He added: "Officers continue to investigate the circumstances surrounding the murder of a male whose body was discovered in a well in Warlingham. Police were called after workmen discovered the body in a well outside an address in Audley Drive, Warlingham at around 13:50hrs on 15 November. Specialist officers, including Metropolitan Police divers, attended the scene and recovered the body. Detective Chief Inspector Cliff Lyons, who leads the investigation, revealed: "Our enquiries continue to try and establish the identity of this male. These enquiries have included reviewing missing person reports but this process may take some time. I would like to thank the public for their positive response to our appeals so far and specifically those in the local community who have been supportive throughout the disruption caused by police and media in their neighbourhood. Given the complex nature of this investigation, it is likely that forensic work at the property will continue for a further month as we attempt to secure all available evidence. Tents: The body was found in the narrow shaft of a well outside this house on Audley Drive in Warlingham Gardeners working at the house, set within an acre of land, spotted the body in the well in Surrey The investigation has so far seen the well where the body was found partly demolished and water from within the well taken for forensic examination. Detectives now believe the body had been in the well for around two years Metropolitan Police spokesman Forensic work will continue on the well, the house and outbuildings at the property to establish as much evidence as possible. DCI Lyons added: "While our work continues to establish the facts of how this male came to sustain his injuries and his body end up in the well, our focus is also on finding out his identity. This is someone's son and my team owe it to him and his family to find out the truth and bring those who committed this atrocious act to justice. Seven men, aged between 21 and 27, have been arrested on suspicion of murder. They were interviewed and subsequently released on bail on Sunday until a date in late December. The arrested men are all Polish car wash workers who live at the house. One of the men said: "I want to clear my name. We don't know nothing. Evidence found by the divers at the scene indicated that the body had been placed in the well, police said George Anastasi, owner of both the property and car wash, said he was "completely shocked" when he heard of the discovery. Rory Mulholland, 21, who was working at the property with 17-year-old Jack Duncan said following the body's discovery: "There was quite a lot of trash in the garden. We spotted a big blue tarpaulin at the bottom of the well. We were curious to see what it was. You could see the shape of someone's legs and a bottom.