Cops have issued an urgent appeal for Courtney Robinson who failed to return home in Hull on Monday.
She has stopped all social media activity which is “very out of character”.
And every call made to her from frantically worried family members and friends has “gone straight to voicemail”.
Police have this evening released a CCTV image of Courtney, which is believed to be the last known sighting of her.
She can be seen wearing a black hoody, black vest top, possibly shorts and a short black skirt. She is carrying a black coloured bag.
Courtney has been described as five foot six inches tall, of medium build with very long, mousey coloured hair.
A spokesman said: “We’ve had nobody that has seen or had contact with her and we are getting increasingly concerned for her whereabouts.
“She’s also a very talkative 14-year-old and she finds it easy to talk to people in the street.
“We’re concerned she may have struck up a friendship with somebody and that she is safe and well but hasn’t been in touch with us.
“If you are in or around the hull area whether you drive a bus or a taxi and think you have seen her please ring the dedicated number.
“It is really important she is reunited with her family. We are really concerned for her safety so if you have seen Courtney please get in touch.”
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