A body found in a well in Warlingham, Surrey, last month, has been identified as Croydon resident Damian Chlywka.
The body of Chlywka, 32, originally from Poland, is believed to have been stuck down the well on Audley Drive for two years.
Two men, aged 33 and 41, were arrested on bail for the suspicion of his murder on Friday.
Seven men, aged between 21 and 27, were also arrested shortly after the body was discovered by workmen on November 15. These suspects have also been released on bail.
Detective Chief Inspector Cliff Lyons 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 heart-breaking 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.”
Police have said that Chlywka suffered injuries consistent with an assault before being placed in the well.
Further forensic tests are taking place after a post-mortem examination did not identify the cause of death.