Scarlet Duddy was last seen in Derry yesterday, and may be in Donegal.
The PSNI has issued an appeal for information about a missing child that may now be in Donegal.
Four-year-old Scarlet Duddy was last seen leaving a play centre in Derry with a woman yesterday morning.
Police in the north believe this woman is a relative who may be with Scarlet in Donegal.
Scarlet has hazel eyes, light brown hair, and two of her front teeth are missing.