Cleveland Police are appealing for information to find a missing teen who may have travelled to the Durham area.
The 17-year-old was last seen at a property on Rosecroft Avenue in Middlesbrough on July 31 at around 2.45pm.
It is believed that Demi-Leigh was sighted sometime after she left Middlesbrough at Darlington train station and it is thought she could now be in the Durham or Cumbria areas.
Demi is described as white, around 5 ft 5” tall, of slim build with a pale complexion, blue eyes and purple/blue hair.
She was last seen wearing a red jacket and grey tracksuit bottoms.
Anyone who may have seen her or anyone who may have information as to her whereabouts is asked to contact Cleveland Police on the non-emergency number 101.