The National Police Air Service helicopter is currently assisting Police in their search for Barbara Robinson, who is vulnerable and missing from Chichester.
The 87-year-old, who has dementia, was last seen at her care home in Grosvenor Road around 9pm on Monday.
Barbara is described as white, about 5’2”, of very slight build, with short dark grey hair and wears glasses.
She was last seen wearing a black blouse and black trousers, and she may also be wearing a black jumper.
Please keep an eye out for her and if you see her, dial 999 immediately, quoting serial 1454 of 30/05.