A post mortem examination is being carried out today after the body of a man was found in a ditch in Surrey.
The discovery was made by a police officer on patrol in Imber Cross, in Thames Ditton.
Two men have been arrested on suspicion of murder.
A Surrey Police spokesman said: "The man has yet to be formally identified but is believed to be a man in his 30s."
He added: "The investigation is in its early stages and enquiries are ongoing to establish the circumstances surrounding the death."
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Before the final declaration on Friday, the Conservative candidate looked set to lose the City Hall race to Labour's Sadiq Khan.
The Tooting MP has been the frontrunner in the counting process ahead of Tory challenger Zac Goldsmith.
It's not just London where elections have been taking place today. There were council elections taking place across the home counties.