Jean McGahey, aged 72, may be in Derry or Donegal.
The PSNI has appealed to the public to come forward with any information that may help them find a missing woman, Jean McGahey.
The 72-year-old was last seen in the Derry City area of Drummard Park at 4.30pm on Sunday afternoon before travelling on the Buncrana Road near the Donegal border.
Last seen travelling in a Red Ford Fiesta, McGahey is described as being about 5’2 in height, slim build with short grey hair.
Jean is believed to have been wearing a Kaftan multi-coloured nightie, a long dark blue raincoat and gold flat footwear.
A police sergeant has posted on PSNI Foyle Facebook: “We are appealing for Jean to make contact with police or her family or if anyone knows of Jean’s whereabouts please contact police at Strand Road on 101 quoting reference number 1404 18/11/18.”