American student went missing in the Dublin Mountains in 1993.
After 30 years, an investigation into the disappearance of Annie McCarrick has been upgraded to a murder inquiry.
The 26-year-old American student's last confirmed sighting was captured on CCTV at the AIB bank in Sandymont, Dublin, on March 26th 1993.
Subsequent sightings of Annie were reported in the Sandymont Green Area, on the number 44 bus bound for Enniskerry, and Johnny Fox's pub in the village of Enniskerry.
Anyone with information is being asked to contact Irishtown Garda Station or the Garda Confidential line.
Detective Superintendent Eddie Carroll from Kevin Street Garda Station made this appeal for information - 30 years on.