East London NHS Foundation Trust has launched an immediate internal investigation into the circumstances surrounding the escape of a patient from the John Howard Centre.
We have reviewed our security and processes as a matter of urgency.
The Trust is working with the police to assist them with their investigation.
More top news
Police in Southwark are appealing to the public for help in finding a teenage girl missing from Bermondsey.
Over 40,000 people picked up their packs to take part in the annual marathon in the capital.
The boyfriend of reality TV star Ferne McCann has been arrested on suspicion of attempted murder following an alleged nightclub acid attack.