Gardaí have established that missing Galway woman Blathnaid Timothy was last seen in Howth, Dublin on the night of December 14th.
Searches of the harbour area in Howth have been called off for the evening and are expected to resume tomorrow.
The taxi driver who picked Ms Timothy (33) up from the city centre has spoken to gardaí and told them he dropped her off on Harbour Road at about 8.30pm that night.
She was earlier captured on CCTV footage using her ATM card to withdraw €60 at the National Irish Bank on Sir John Rogerson's Quay on Dublin's south quays at 8pm. Ms Timothy then crossed the road and got into a taxi. Previously, this was her last known movement.
Ms Timothy, who had worked for Coca-Cola and KPMG, is originally from Glenamaddy, Co Galway but is living on Camden Street, Dublin.
When her family and friends had not heard from her for a number of days and efforts to contact her failed she was reported missing on December 17th.
Ms Timothy is described as being 167.6cm (5ft 6in) tall, of thin build and pale complexion, with medium length dark brown hair and blue eyes. She was wearing a three-quarter length black wool coat, grey jeans and a black and red scarf when last seen.
Anybody with information or who may have seen her or somebody matching the description in Howth on the night in question is asked to contact Harcourt Terrace Garda station on (01) 6669500.