Confirmed sighting of missing Monica Riordan

Gardaí say they've confirmed a sighting of missing woman Monica Riordan on the day she went missing.

Authorities have been able to place the 39-year-old on Pearse St., at the Macken St. junction, in Dublin City Centre at 5 O'clock on the evening of Tuesday December 20th - that's two hours after she disappeared.

Monica is now know to have walked along Macken Street from the railway bridge to the junction with Pearse Street - gardaí say she seemed disorientated and confused.

That particular evening was wet and cold.

She is described as being thin, with shoulder length blonde hair. She was wearing a long grey hooded coat, dark jeans and grey and white runners.

Anyone who was on Macken St on the 20th, and who may have seen Monica, is asked to contact gardaí.