Frances Madigan is described as a white Irish woman, 5ft 6ins, who wears glasses and has auburn hair.
When last seen, she was wearing a blue anorak, black trousers, black leather boots and was carrying a black shoulder bag.
More top news
Police have released CCTV images of a car they want to find in connection to a fatal hit-and-run on Saturday morning.
The family of murdered teenager Jimmy Mizen have held a community event in his memory to raise money for the foundation in his name.
A drawing made for one of the famous paintings from the Victorian era - Flaming June - has been rediscovered after more than 100 years.