Gardai have arrested a 41 year old man in connection with the murder of Elaine O'Hara.
The childcare assistant went missing in August 2012, and her remains were found in Rathfarnham last month.
Gardaí are still appealing for anyone with information to contact them at Blackrock Garda Station.
They're especially interested in the movements of her turquoise Fiat Punto which was found outside Shanganagh Cemetery two days after she disappeared.
The man in custody can be held for up to 24 hours.
He'll then have to be either charged or released.
