Gardaí will prepare an extensive file for the Director of Public Prosecutions after a major investigation into the murder of Marie Tierney almost 35 years ago.

A man in his 70s has been arrested by gardaí investigating the 1984 murder of 34-year-old Marie Tierney.

It was during a review of one historic unsolved murder that gardaí in Kilkenny came across a second unconnected cold case.

The remains of a Kilkenny woman who was murdered in 1984 have been examined and re-interred.

33 years after the murder of a Kilkenny woman - no one has ever been brought to justice.