A predatory paedophile, whose rape victim has never been identified, has been jailed indefinitely.
David Ernest Bye, 43, pleaded guilty to the rape and sexual assault of a girl under 13, and possessing more than 17,000 indecent images of children, some of which he had taken himself.
Dyfed-Powys Police believe Bye, of Mid-Wales, is the first person to be convicted of rape of a child who has never been identified.
Bye must serve a minimum of five years in jail before he is considered for release.
Merthyr Crown Court was told he groomed multiple victims and photographed himself raping one of them.
The matters came to light when Bye, who lived in Mid-Wales but worked as an accountant three days a week in Reading, Berkshire, had to call in IT support for a problem with his laptop.
More than 17,000 indecent images of children were found on the laptop, including the most serious category of child pornography. Of these pictures, he had taken 202 of 10 different children himself.
Some of the pictures showed Bye raping and sexually assaulting a young girl.
Sentencing Bye, Judge Eleri Rees imposed an indeterminate sentence for the protection of the public.
She said he must serve at least five years before he is considered for parole but would be on licence for the rest of his life and could be recalled at any time.
