Gardai investigating the murder of Patricia O'Connor, whose remains were found scattered in the Wicklow Mountains in June, have arrested three people.
A 73-year-old man was arrested in County Meath, while two women aged 19 and 38 were arrested in Dublin.
They're being held at Bray and Wicklow Garda stations under Section 4 of the Criminal Justice Act.
Another man has already been charged in relation to the investigation