Police have named a murder victim who was tied up and dumped down a well about two years ago.
The man has been identified by Scotland Yard as 30-year-old Damian Chlywka, a Polish national who moved to the UK in 2008.
Police were called when his body was discovered by workmen in a well outside an address in Audley Drive, Warlingham, Surrey, on 15 November at 1.50pm. Specialist officers attended the scene where the body was recovered said he had sustained injuries consistent with an assault prior to being placed in the well.
Two men aged 41 and 33 were arrested last night on suspicion of murder. They have both been released on bail.
A team of specialist officers including Metropolitan Police divers had found that Mr Chlywka's body showed injuries "consistent with an assault" before he was put in the well. He had been bound and it is believed he had been there for around two years, Scotland Yard said.
Further tests are being carried out as a post-mortem held on 17 November did not provide a cause of death.
Detective Chief Inspector Cliff Lyons, the officer leading the investigation, said: "Damian had lived at various addresses across London including two known to be in the Croydon area. At one point he had lived at 11A Audley Road.
"Our focus now is to build up a fuller picture of Damian's life in the UK.
"We have given the difficult and heartbreaking news to his family who are distraught that this has happened to their loved one.
"I am appealing to anyone who knew or previously worked with him to contact the police and help us to piece together a picture of Damian's life and how it came to end in these distressing circumstances."
The seven men, aged between 21 and 27, who were arrested on suspicion of murder, have been released on bail until a date in late December.
Additional reporting by Press Association