An appeal has been launched to find a vulnerable missing man.
Thomas McKeown, 52, was last seen in the centre of Lisburn on Tuesday morning, June 11.
Police described Mr McKeown as "vulnerable" and said it is possible that Mr McKeown may have taken a train to Belfast and then to Dundalk.
A PSNI spokeswoman said: "Can you help us locate missing person Thomas McKeown?
"Thomas is a vulnerable adult and has been missing since yesterday, Tuesday 11 June. The 52 year old was last seen in the centre of Lisburn at around 11.25am and we are keen to trace his current whereabouts.
"It is possible that Thomas may have taken a train to Belfast and then to Dundalk. If you have seen Thomas or know where he is, please contact police in Lisburn on 101."
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