26 September 2012 Last updated at 09:43 ET

A rapist has been jailed for six years after DNA from his victim's boyfriend led to his conviction.

Mold Crown Court heard the teenage girl had consensual sex with her boyfriend on the night Adam Stapleton raped her.

Stapleton, 48, from Acrefair, near Wrexham, denied rape but was found guilty after a jury heard the boyfriend's DNA was discovered on him.

Judge Niclas Parry also ordered Stapleton to register as a sex offender for life for the "unspeakable" offence.

The prosecution said the transfer of DNA had occurred during the rape.

Stapleton claimed it must have been an accidental transfer from a toilet seat, but the victim said she had not used the toilet.

He held his head in his hands and wept when he was convicted unanimously by the jury.

Sentencing, judge Parry said it was "a dreadful, unspeakable thing that you did".

He said the victim was vulnerable and Stapleton had taken advantage of her.

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DNA of victim's partner on rapist