This matter allegedly occurred on Sunday, 27 September 2020 whilst the 18-year-old young woman was in police custody.
It was reported to Police on Tuesday, 29 September and after a criminal investigation an arrest was made on Thursday, 1 October 2020.
The matter is also a subject of a separate Professional Standards investigation.
Commissioner Caldwell suspended the police constable prior to his arrest.
The accused appeared at the Magistrate Court Friday and has been remanded in custody while the investigation continues.
