The Independent Police Complaints Commission is managing an investigation by Thames Valley Police into allegations against a police officer of misconduct in public office and unauthorised disclosure of information.
The allegations, which originate from a complaint made by a member of the public, are that a police constable conducted an inappropriate relationship with a woman in a vulnerable position and that he also provided that woman with confidential information.
As a result of that investigation a Thames Valley Police constable based in the Aylesbury area, aged 36, was arrested and questioned on Friday. He has been bailed to a date in April.
IPCC Commissioner Mike Franklin said: "The investigation follows Thames Valley Police’s decision to refer this matter to the IPCC on Tuesday, February 26.
"These are serious allegations and for that reason I have decided that this investigation should be conducted under the direction and control of the IPCC.”
More top news
The theatrical production of 'War Horse' is on at the Mayflower Theatre in Southampton.
Harry and Meghan are celebrating the Prince of Wales’s 70th birthday at Buckingham Palace.
The Duke of Sussex was distracted by a bee, causing his wife to break into giggles.