The Police Service in Northern Ireland is seeking further information on the death of Lu Na McKinney.
They have issued a photograph to An Garda Siochana in an effort to get people in the Donegal area to contact them with any information in the months leading to her death in April.
Ms. McKinney died at Devenish Island in Fermanagh on Thursday 13 April 2017.
Detective Inspector David McGrory said in a statement yesterday evening that he hopes the photo will encourage people to come forward with any information they have about her.
The PSNI wants to hear from anyone who knew her or anyone who had contact with Mrs McKinney, who lived in Convoy, County Donegal, in the months preceding her death.
An Garda Síochána are working jointly with PSNI to investigate her death.
Anyone with information can contact either the PSNI on 04890 650 222 , confidential Crime Stoppers number on 0800 555 111 or An Garda Síochána at Letterkenny on 074 9167100 ,the Garda Confidential line on 1800 666 111 or any Garda Station.