Siobhan Hynes.

Siobhan Hynes.

A 51-year-old man who has spent 24 years in prison for the rape and murder of a Connemara schoolgirl has claimed that his conviction was a miscarriage of justice, arguing that he should have the right to retest forensic evidence.

“Some of the samples haven’t been tested at all. Is there anything unreasonable in asking them to be tested now?” said barrister Michael O’Higgins SC today, launching an appeal by John McDonagh.