Fred and Rose West are known to have committed at least 12 murders between 1967 and 1987; many of those connected to the case believe there are several other victims whose bodies have never been found. Prior to his suicide, police had recorded over 108 hours of tape-recorded interviews with Fred, both when he had claimed to have acted alone in the commission of the murders, and when he had attempted to portray Rose as being the more culpable participant. On several occasions, Fred made cryptic hints he had claimed several other victims, but refused to divulge any further information beyond that he had murdered 15-year-old Mary Bastholm in 1968 and buried the body on farmland near Bishop's Cleeve. He also claimed to have killed one victim while working on a construction project in Birmingham, and that other bodies had been buried in Scotland and Herefordshire.