The trial of a 24-year-old woman for careless driving causing the death of her younger friend more than three years ago on the Cork/Kerry border has collapsed after the jury received a prosecution exhibit document, part of which they should not have seen.

A teenager who died when she was ejected from a car as it plunged into a low-lying field on the Cork-Kerry border had not been wearing a seatbelt.

A 14-year-old girl was thrown through the front window of a car and found dead around 5m-10m away in a field in Kerry.