Police are hunting a man who raped a teenage girl in an attack that was overheard by her mother who had phoned her daughter.
The 15-year-old girl was threatened with a four-inch knife in Elswick, Newcastle upon Tyne, about 8.50pm on Tuesday.
She was then taken to a nearby waste ground where she was raped in an horrific attack that lasted over an hour and a half.
At about 9.30pm, her mother became concerned her daughter had not returned home and tried calling her mobile.
But on the other end of the line she heard the voice of her daughter's attacker and called the police.
After the attack, the schoolgirl phoned her mother to say she had been robbed. But in a later conversation, she revealed she had been raped.
The victim's aunt said the family is devastated.
"Her mum could hear his voice in the background, she didn't know where (her daughter) was or what was happening," she said.
"She wasn't drinking on the street like a lot of 15-year-olds do. She should have been safe. She is coping. But she doesn't realise the severity of what's happened to her because she's only 15.
"We just want him caught. If anyone saw anything suspicious or anyone hanging around the area, please tell the police.
"My sister is absolutely devastated. She just keeps blaming herself and feels so guilty."
Police have found the knife they believed was used in the attack.
They have also released CCTV images of the suspect, who is in his late teens, around 5ft 8ins tall with dark skin and of slim build.
He was wearing a black leather jacket and a black fleece hat.
Northumbria Police Detective Chief Inspector Gary Hetherington, who is leading the investigation, said his team will not rest until the man is caught.
"We have a dedicated team of officers and staff working on this investigation, using every tool at our disposal to catch the rapist," he said.
"We are studying extensive CCTV footage, undertaking forensic tests and working with the family and local community.
"This was a particularly nasty offence, all the more so because of how unusual it is, and I would like to again reassure the community that we have extra officers on patrol in the area and that these will continue over the holidays."
Anyone with any information should call Northumbria Police on 101 or Crimestoppers on 0800 555 111. Crimestoppers may offer a reward for information which leads to an arrest and charge.