Moors murderer Ian Brady’s legal advocate Jackie Powell has been detained at her home in south Wales for allegedly hiding information about where one of the child victims was buried.

In a documentary by Channel 4, Powell revealed that Brady had given her a sealed envelope containing the location of 12-year old Keith Bennett’s grave on a serious condition that it was to be opened only after his death.

The sealed envelope also contained a letter to Keith Bennett’s mother who is suffering with cancer, disclosed Powell. But when the police searched for the letter at her home and at Brady’s cell, they could not locate it. While the police continues its investigation regarding the letter, Powell has been released on bail.

The development comes after Keith’s tormented mother Winnie Johnson, 78, made a final plea to Brady in a letter written in July, stating, “If you have got it in your heart to tell me where Keith is, it would end the trouble I have had for 47 years. I would like him found and buried before anything happens to me.”

Keith was kidnapped on June 16, 1964, and killed by Brady and accomplice Myra Hindley, who were responsible for the murders of five youngsters in the 1960s. The pair lured children and teenagers to their deaths, torturing them before burying their bodies on Saddleworth Moor in Greater Manchester.

Pauline Reade, 16, disappeared on July 12, 1963, and John Kilbride, 12, was kidnapped in November 1963. Lesley Ann Downey, 10, was lured away from a funfair on Boxing Day, 1964, and Edward Evans, 17, was killed in October 1965.

Brady and Hindley were sentenced to life at Chester Assizes in 1966 after they were convicted for the murders of John, Lesley Ann and Edward.

Related:
Tia Sharp murder: Accused to appear in court, community grieves
Woman stabbed to death in Birmingham taxi, police appeals for witnesses