A London hospital from which a rapist escaped twice in the space of three years has launched an inquiry.
Terrence O'Keefe was escorted by professionals at all times
Terrence O'Keefe, 39, who is serving a life sentence for rape and is a secure patient at Lambeth Hospital, fled while visiting King's College Hospital.
Police said O'Keefe was dangerous and should not be approached. In 2005 he also escaped from A&E at King's.
South London and Maudsley NHS Trust (SLaM), which runs Lambeth, said O'Keefe had been escorted at all times.
SLaM and the King's College Hospital NHS Foundation Trust are reviewing procedures as part of the inquiry.
The trusts said in a statement: "Terrance O'Keefe was admitted to King's College Hospital from Lambeth Hospital, with a potentially life-threatening condition.
"During his time in hospital, he was escorted by mental health professionals from SLaM 24 hours a day. The circumstances surrounding this will be the subject of a rigorous joint review by both healthcare organisations."
He escaped from King's after being transferred for treatment on Friday afternoon.
O'Keefe is a light-skinned black man, last seen wearing a green fleece jumper, black jeans and tan-coloured boots.
There was a confirmed sighting of him at about 1500 GMT in Brixton, south London.