The Independent Police Complaints Commission is investigating the conduct of the Deputy Chief Constable of Surrey Police - in relation to his alleged knowledge that Milly Dowler’s mobile phone was illegally accessed by the News of the World in 2002.
Surrey Police Authority says it voluntarily referred the conduct of Dep Ch Const Craig Denholm, last Thursday.
Mr Denholm was the senior investigating officer for part of Operation Ruby, the investigation into the abduction and murder of Milly Dowler in 2002.
The IPCC investigation is considering whether he was aware that the newspaper had accessed Milly Dowler’s voicemail in 2002, and his handling of that information.
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Police body cam footage captured the incident in Brighton in June 2013.