A 20 year old woman from South Yorkshire will appear before magistrates alongside Lostprophets vocalist Ian Watkins charged with child sex offences.
Officers said the woman and the Welsh rock star - whose hits include Last Train Home - had been arrested as part of a continuing investigation. A 24 year old woman from bedford has also been arrested in connection with the investigation
"A 35-year-old Pontypridd man has been charged with conspiracy to engage in sexual activity with a female under 13 and possession/distribution of indecent images of children and is due to appear at Cardiff Magistrates' Court today," said a South Wales Police spokesman.
He added that two women, aged 20 and 24 from Doncaster, South Yorkshire, and Bedford respectively, have been charged with "similar offences" and are also due to appear in court. All three have been questioned at Cardiff Bay police station.