The Independent Police Complaints Commission (IPCC) is investigating claims a Metropolitan Police detective constable forced a woman he investigated into a relationship once she was released from prison.
The DC, who has been suspended from duty, is accused of sexual offence allegations, attempting to pervert the course of justice and misconduct in a public office. He was arrested by IPCC investigators on 17 November and interviewed while searches were conducted at his home and the police station he is based at.
An IPCC statement said: "The woman had previously been subject to an investigation by the officer and subsequently convicted. It is alleged that the relationship started after she had been released from prison and met with the officer to obtain property that had been seized during the investigation. The officer has been bailed and the investigation continues."
A Met Police spokesman confirmed the detective constable was suspended from duty on 20 November.