Police have formally identified a decomposed body found in west London as that of Alice Gross murder suspect Arnis Zalkalns.
A post-mortem examination of the body, which was discovered in Boston Manor Park on Saturday, has now been completed.
Scotland Yard say the body is that of the 41-year-old Latvian builder who emerged as the prime suspect in the schoolgirl's death.
The cause of death is consistent with hanging and there is no evidence of any third party involvement, police added.
Zalkalns vanished from his flat in Ealing on 4 September, a week after Alice is thought to have been abducted and murdered while walking home along a canal towpath in Hanwell.
Alice was found dead in the River Brent on Tuesday after a five-week search. Zalkalns was filmed cycling along the same route behind Alice on the day she went missing.
He worked at a building site in Isleworth, west London, and is thought to have come to the UK in 2007.
Authorities have faced criticism for apparently holding no record of his conviction for bludgeoning and stabbing his wife Rudite to death in Latvia.
During the investigation it also emerged Zalkalns was arrested in London on suspicion of indecently assaulting a 14-year-old girl in 2009, but was never charged.
A post-mortem examination on Alice was inconclusive and further tests are to be carried out to find out how she died.
Police said "significant efforts" were taken to conceal her body in the water.
Zalkalns had not accessed his bank account or used his mobile phone since 3 September, nor had he returned home to his partner and young child in Ealing. He also left behind his passport.
Scotland Yard has said that although Zalkalns had been identified as a suspect in the murder investigation, inquiries continue to establish the full circumstances surrounding the crime.
A spokesman said: "Officers are still searching for evidence, and once again appeal to the public for any information that could assist them. Anyone with any information is asked to contact us on 020 8358 0100."