The man who was at the centre of the 'X case' has failed to have his conviction, kidnap and sexual assault quashed by the Court of Criminal Appeal.

Sean O'Brien, aged 53, with a last address in Swords, Co Dublin, was jailed for three and a half years last March for the false imprisonment and sexual assault of a 15-year-old girl.

The assault happened in 1999, after the girl hailed his taxi at Donnycarney Church in Dublin.

In 1994, O'Brien was convicted of the unlawful carnal knowledge and sexual assault of a 14-year-old girl.

The girl, who became pregnant as a result of the attack, became known as X, and the Supreme Court ruled that she could have an abortion because her life was threatened by the pregnancy.