File photo: Kildare garda station where the investigation will be based
Gardai are focusing on a particular chief suspect in the investigation into the murder of Deirdre Jacob.
It's understood the man in question has a history of violence against women and has served time in jail. It's also believed he is living abroad at present.
Yesterday, gardai upgraded the case of the missing 18-year-old to a murder investigation.
The Newbridge girl disappeared 20 years ago on July 28 1998 as she walked to her home at Roseberry, Newbridge.