A massive search is underway for a missing woman in County Tyrone.
Members of the public have joined police teams in the desperate search for Lisa McGowan, 44, from Drumquin, who has not been seen since Monday.
A police helicopter searched from the skies on Thursday as police officers and local people trawled the area on foot.
Her husband issued an emotional plea for her return on Thursday night.
Patrick McGowan said: "Myself and my family are very concerned and worried for her safety and if anybody has any sightings or even thinks they may have seen her, please contact police at Omagh, or your local police station, and inform them immediately.
"Even if they are not sure and if it is just an inkling in their head, just contact the police and let them take it from there.
"We are really, really worried.
"If Lisa for any reason happens to read the paper, I love her and whatever help she needs will be found and got for her."
Mr McGowan believes Lisa left their home between 1 and 4pm on Tuesday, while he was working in Dublin.
He does not believe she took any money or clothes with her.
There may have been a possible sighting of her on the Claremore Road, between Castlederg and Drumquin at approximately 8.30pm on Tuesday.
Police in Omagh have asked farmers and local residents to check any outbuildings or sheds for any trace of Lisa.
She is described as 6ft tall, slim to medium build with short auburn hair and glasses, which are red and silver in colour.
Lisa may have been wearing a light green hoodie-style top.
Mr McGowan added: "Police are doing everything they can and we are getting help from gardai because we think she could move to the South.
"One of our favourite places is Rathmullen Beach in Donegal and luckily we have friends there who are searching the area."
He said he had been completely overwhelmed by the support offered by friends, colleagues and the community in Drumquin.
"She is so loved by her family and also by the local community, who have been unbelievable.
"We had teams of 60 to 70 locals arriving, who went out there in their own time searching this whole area. People are driving as far as they can, hoping that they might see something.
"People have brought us food and my collleagues are offering to send more people to come and search."
Anyone who knows of Lisa's whereabouts is asked to contact her family or Police on 0845 600 8000.