They say they haven’t seen Lauren Lennox, 36, since around 11.30pm on Sunday October 21.
They believe that Lauren may have visited the Portrush area at some stage after that.
“Her family are becoming increasingly worried about her welfare,” said a PSNI spokesperson.
Lauren is described as 5ft 2″ tall, of medium build and with shoulder length dark hair.
The police are appealing to Lauren, or anyone who knows of her whereabouts, to contact them urgently on 0845 600 8000.
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