A man suddenly collapsed in a shop and is now seriously ill in hospital - but police have no idea who he is.
The man was in a shop in High Road, Leytonstone, at around 2pm on Monday, June 19 when he suddenly fell.
He was wearing a black shirt, blue jeans and brown slippers.
Police are now appealing to find out what happened to the man, who has not regained consciousness.
Officers have been struggling to identify the man.
Anyone who can assist is asked to contact Waltham Forest CID on 0203 276 0964.
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