Police in Wales fear another young teenager could have gone missing - after using internet chat rooms.
Darren Freeman, 15, was last seen on Tuesday lunchtime.
Officers in Gwent confirmed today they are looking at the possibility that he could have been abducted by someone he arranged to meet online.
Gwent Police say they are worried about his Internet use and are not ruling out the possibility that he could have been abducted by someone he arranged to meet online.
Superintendent Jon Burley said on Sunday that a call on the case had been received at the incident room at about 10.40am and he urged the caller to ring back.
"We believe the caller has information that could lead us to the whereabouts of Darren," he said.
Officers say they have exhausted all leads through speaking to friends and family of Darren, known as DJ, and searching the college campus.
Superintendent Burley said: "Now we are shifting our emphasis towards information held on the computer."
Darren's foster mother, Lynne Freeman, has made an emotional appeal for him to come home.
She broke down in tears as she said: "I want to say to you, Darren, you are not in any trouble, please, please come home. Please ring us as soon as you can."
She revealed the student, who had been at Coleg Gwent for just two weeks, had been using Internet chatrooms for the last few months.
Mrs Freeman said she had not been worried about this, adding: "We always knew when he was on it because he always asked, and it was usually just for a couple of hours."
A team of 25 officers is working on the investigation and has already established that Darren had links in the Swindon area through the Internet.
Detectives want to trace anyone who may have spoken in chatrooms to Darren, who they believe may have used the name DJ or Deejay when online.
The teenager lives in Redbrook, near Monmouth, but also has connections in Pontypool, Monmouth and Usk.
He is described as 5ft 8ins and thin with short blond hair. At the time he was last seen he was wearing blue jeans, a black Slipknot hooded top with red writing on the front and a barcode on the back, and grey trainers.
Darren Freeman, 15, was last seen on Tuesday lunchtime.
Officers in Gwent confirmed today they are looking at the possibility that he could have been abducted by someone he arranged to meet online.
Gwent Police say they are worried about his Internet use and are not ruling out the possibility that he could have been abducted by someone he arranged to meet online.
Superintendent Jon Burley said on Sunday that a call on the case had been received at the incident room at about 10.40am and he urged the caller to ring back.
"We believe the caller has information that could lead us to the whereabouts of Darren," he said.
Officers say they have exhausted all leads through speaking to friends and family of Darren, known as DJ, and searching the college campus.
Superintendent Burley said: "Now we are shifting our emphasis towards information held on the computer."
Darren's foster mother, Lynne Freeman, has made an emotional appeal for him to come home.
She broke down in tears as she said: "I want to say to you, Darren, you are not in any trouble, please, please come home. Please ring us as soon as you can."
She revealed the student, who had been at Coleg Gwent for just two weeks, had been using Internet chatrooms for the last few months.
Mrs Freeman said she had not been worried about this, adding: "We always knew when he was on it because he always asked, and it was usually just for a couple of hours."
A team of 25 officers is working on the investigation and has already established that Darren had links in the Swindon area through the Internet.
Detectives want to trace anyone who may have spoken in chatrooms to Darren, who they believe may have used the name DJ or Deejay when online.
The teenager lives in Redbrook, near Monmouth, but also has connections in Pontypool, Monmouth and Usk.
He is described as 5ft 8ins and thin with short blond hair. At the time he was last seen he was wearing blue jeans, a black Slipknot hooded top with red writing on the front and a barcode on the back, and grey trainers.
