Press release issued on behalf of the Police Service of Northern Ireland.
Police continue to appeal for information regarding missing person, 71 year old John Concannon.
Mr Concannon was last seen on the evening of Tuesday 10 November in the Lenamore Road/Beragh Hill area of Derry. He is described as being about 5'6" tall, of medium build and with grey hair. He was wearing a black and grey beanie hat, a black coat, checked shirt and navy trousers.
Mr Concannon has medical conditions which cause extra concern for his wellbeing.
Inspector Alison Ferguson said: "Following extensive searches and investigation, we now believe that there is a possibility that Mr Concannon may have went over the border into County Donegal.
"I would ask anyone who knows of his whereabouts, to contact Strand Road Police Station on 04890 650222.
*Note to editor, all media enquiries regarding this incident should be referred to the Police Service of Northern Ireland at 04890 -700084
A photograph of John Concannon is available by email request to pressoffice@garda.ie