The mother of a teenage girl kidnapped, raped and murdered by a convicted sex offender she met on Facebook has questioned why he was free to attack her daughter.
Andrea Hall also warned of the dangers of social networking sites after convicted rapist Peter Chapman, 33 - who was also suspected of other attacks - met 17-year-old Ashleigh online.
Chapman, who admitted kidnap, rape and murder, was jailed for life and told he would serve at least 35 years.
Speaking after the sentencing, Mrs Hall said she had been powerless to stop Ashleigh going out that fateful night.
"Them sort of people should be tagged and they should be kept an eye on all the time," she said.
"I blame them for letting them out. He shouldn't have been let out."
Chief Superintendent Andy Reddick, who led the murder inquiry, said: "Ashleigh made a mistake and paid for it with her life. Her death and this murder trial should be a wake up call to parents and internet companies around the world to ensure as far as they can, that nothing happens to another innocent victim."
Chapman was jailed in 1996 for raping two prostitutes and was also suspected, though never charged, of carrying out other rapes and sex attacks against young women.
And Merseyside Police confirmed they waited nine months to put out a national alert after Chapman - who was still on parole - could not be contacted over a traffic offence.
Officers had visited his house in Liverpool in January last year but it took until September for the full alert to be issued. A spokesman said he did not know why the force had failed to go national earlier.
