Gardaí have completed a search of open land in Co Wicklow as part of their investigation into the murder of Jo Jo Dullard.
Ms Dullard went missing 29 years ago as she was on her way back to Kilkenny from Dublin on 9 November 1995.
The 21-year-old was hitchhiking home to Kilkenny, and took a lift at Moone in Co Kildare, and has not been seen since.
The missing persons investigation was upgraded to murder four years ago.
Last month, gardaí began searching lands near the Wicklow/Kildare border.
The area of open ground was subject to excavation, technical and forensic examinations.
A 55-year-old man was arrested last month in connection with Ms Dullard’s disappearance but was later released without charge.
Gardaí said they were not commenting further on the searches for operational reasons.
They said that Ms Dullard’s family has been updated on the current position of the investigation.
In a statement, gardaí said: “Recent garda activity has also been of assistance to the investigation team.
“An Garda Síochána acknowledges the significant response of the public to these recent appeals and events.
“Gardaí continue to appeal to any person who may have previously come forward, who felt they could not provide Gardaí with all the information they had in relation to this matter, to contact the investigation team again.
“An Garda Síochána continues to appeal to anyone with any information, no matter how small or insignificant you might believe it to be, to contact Naas Garda Station on 045 884 300 or any garda station, or anyone who wishes to provide information confidentially should contact the Garda Confidential Line on 1800 666 111.
“Any information will be treated with the strictest confidence.”