Disgraced musician Ian Watkins has reportedly just cost a young mother her daughter after she struck up a relationship with him while he was behind bars - despite knowing his sordid criminal history. It's suggested that he even made lude comments to her with regards to her child.

Ian Watkins performing liveIan Watkins performing live

The ex-frontman of Welsh band Lostprophets has allegedly been grooming the 21-year-old mother of a 2-year-old girl after one news outlet revealed that a woman wrote a fan letter to him telling him that there were still people who cared. She apparently believed he was innocent, even visiting him at HM Prison Wakefield - a Category A institution - where it's said he told her he loved her and encouraged her to wear an engagement ring.

Despite serving a sentence of 35 years for 13 charges of attempted rape and sexual assault on children as young as 12 months, he asked the single mother - who had been a fan of the singer since she was 16 - if her daughter came into her room 'during sex', according to The Sun.

'This is an absolute shambles. We're sickened', a representative for children's charity NSPCC said in a statement. 'It's utterly bewildering that he could carry on grooming. It shows contempt for children he abused, and raises serious questions about supervision.'

Since the incident, the story claims, the woman's toddler has been taken into care and her phone and laptop have been confiscated, despite previously telling a friend, 'I won't let my daughter near him'. Those at Wakefield Prison insist that there was 'nothing untoward' about their correspondence, while Lincolnshire Police said: 'We will always take action to safeguard vulnerable adults and children.'

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Last month The Sun reported that an individual who makes regular visits to the prison noticed that Watkins had been receiving visits from a number of young 'goth' females, who the source claimed to have witnessed him kissing and holding hands.