A man whose body was found in a well had been assaulted, police said last night.
An initial post mortem examination did not prove conclusive in providing a cause of death and further tests will be carried out, Scotland Yard said.
However, the examination did reveal injuries consistent with an assault, a spokesman added.
Seven men aged between 21 and 27 who were arrested on suspicion of murder have been bailed to a date in late December, pending further investigation.
More top news
Very mild for mid February
Five teenagers have been arrested in London on the suspicion of preparation of acts of terrorism.
Goals from Lucas Perez and Theo Walcott ended Sutton United's FA Cup dream on Monday night.