A 12-year-old girl fought against a robber for 25 seconds as he tried to steal her mobile phone in an attack captured in horrific CCTV footage.

Derbyshire Police have released the disturbing images of the moment the girl resisted her attacker on Cambridge Street, Derby, before he eventually ran off with her iPhone 6.

The force have since arrested a 22-year-old man from Derby in connection with the incident.

The dramatic footage shows the schoolgirl put up a fight as she managed to keep hold of her phone even after she was dragged to the floor.

The 12-year-old was on her way home to her mother at 4.40pm on Sunday after she had been sent on an errand to the local shops.

Detective Constable Mick Stainsby, who is investigating the crime, said: "The CCTV footage captures the horrific incident taking place.

"The 12-year-old victim has been very brave but was attacked for apparently no other reason than to steal her phone, a rose gold iPhone 6s."

Police are still keen to speak to anyone who may have witnessed the incident or has any information they think may help with the investigation.