Police are urgently appealing for help to find a man who has absconded from a mental health facility in Beckenham, south London
Abderrahmane Ariba, 30, was last seen at about 09:30 BST while he was on an escorted walk.
Mr Ariba may have travelled from the facility in Beckenham to Marble Arch then Croydon where he was last seen.
Extensive enquiries are ongoing to locate him.
He is described as 5ft 5ins tall and of large build.
When last seen, he was wearing a blue polka dot T-shirt, black tracksuit trousers and black trainers.
Members of the public are advised not to approach him.
Anyone who knows of his whereabouts is urged to contact the force and for an immediate sighting call 999.