Police are appealing to the public for help in locating a man who was seen entering the Six Mile Water river in Antrim on Sunday.
A multi-agency search operation is continuing today to locate Keith Carlisle.
Anyone who believes they saw the 40-year-old on Sunday night is being urged to get in touch with police.
Inspector Julian Buchanan said: "Keith was seen entering the water shortly before 11pm on Sunday night.
"Immediately, a multi-agency search and rescue operation was launched, involving our officers and a number of partner agencies.
"Despite these searches, we have so far been unable to locate Keith.
"While searches are ongoing, we are keen to establish Keith's movements on Sunday night. We know he had been socialising in the town that evening and my appeal is to anyone who came into contact with Keith on Sunday night, or believes they may have seen, to contact us.
"This is a distressing and worrying time for Keith's family and loved ones, and we would urge anyone who has information that could assist us to call us on 101, and quote reference number 2034 of 23/08/20."
