Moors Murderer Ian Brady has been returned to Ashworth psychiatric hospital after undergoing medical tests, officials have confirmed.
Brady, 74, who, with Myra Hindley, murdered five children in the 1960s, is understood to have suffered a seizure earlier this week and was taken to Fazakerley General Hospital in Aintree, Liverpool.
A spokeswoman for Ashworth, where the serial killer has been detained for the last 27 years, said he had "recovered enough" to be discharged from Fazakerley but remained "physically unwell".
A spokeswoman for Ashworth, in Maghull, Merseyside, said Brady became "acutely physically unwell" on Monday.
"He underwent a series of tests and was kept in for observation but has now recovered enough to return to Ashworth," she added.
"(He) remains physically unwell and will be treated by Ashworth Hospital's own physical healthcare team in conjunction with any expert input required from consultants at the general hospital."
Brady has been tube-fed since refusing food 12 years ago.
He is due to attend a mental health tribunal on Monday regarding his application to be transferred to a Scottish prison and be allowed to die, but his appearance at that hearing remains in doubt.
Brady and Hindley lured youngsters to their deaths, with the victims sexually tortured before being buried on Saddleworth Moor above Manchester.
Pauline Reade, 16, disappeared on her way to a disco on July 12 1963 and John Kilbride, 12, was snatched in November the same year.
Keith Bennett was abducted on June 16 1964 after he left home to visit his grandmother; Lesley Ann Downey, 10, was lured away from a funfair on Boxing Day 1964; and Edward Evans, 17, was killed in October 1965.
Brady was given life at Chester Assizes in 1966 for the murders of John, Lesley Ann and Edward.
Hindley was convicted of killing Lesley Ann and Edward and shielding Brady after John's murder, and also jailed for life.
In 1987 the pair finally admitted killing Keith and Pauline.
Both were taken back to Saddleworth Moor in 1987 to help police find the remains of the missing victims but only Pauline's body was found.
Hindley died in jail in November 2002, aged 60.
Brady, who was born in Glasgow, wants to be transferred to a Scottish prison and be allowed to die.
The mental health hearing on Monday could be a rare chance to see him in public.
It is only the second time such a hearing has been held in public.
The tribunal is due to take place at Ashworth and be relayed to the Civil Justice Centre in Manchester, where the public will be able to observe the proceedings, Judge Robert Atherton ruled.
Brady's solicitor, Richard Nicholas, said earlier today that he "remained hopeful" the tribunal will go ahead as planned.