A senior Met police detective is due to be sentenced today, after being convicted of trying to sell information to the News of the World about the phone-hacking inquiry.
April Casburn, who was found guilty of misconduct in public office in January, was told by the judge that she could face a custodial sentence.
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The 34-year-old from Coulsdon in Surrey died during the private party in Headley in the early hours of Monday, Surrey Police said.
The Home Office made the arrests at various restaurants across London on July 4.
Mayor of Newham Sir Robin Wales criticised the International Olympic Committee on the fourth anniversary of the opening ceremony.