A 42-year-old Lithuanian man was found injured after he had been acting strangely and trying doors along Roman Road.
The victim was discovered by London Ambulance Service on March 14 at around 2.50pm.
Inquiries revealed the victim had been seeing trying doors and entered one address where his behaviour was described as strange. On returning to the street he was seen to try more doors.
When he arrived in the UK on Friday (March 13) he phoned relatives to confirm his imminent arrival at East Ham train station. His family grew concerned when he did not arrive at the station and reported him missing to police on Saturday.
Family members have confirmed the victim said he was wearing a grey jacket, blue jeans and blue trainers, but when he was found he was wearing a large luminous green hoody.
He was carrying his passport, a black Nokia mobile phone and two rucksacks containing clothing and a blood pressure machine. It is thought he only had five Euros on him and nothing else of particular value. All of this was gone when he was found.
He is described as a white Eastern European man, medium build, with short cropped dark hair, which is receding.
Det Con Matt Webb, from Newham CID, said: “I would be very keen to hear from anyone who may have seen the victim at any stage between March 13 and 14. I would also like to hear from anyone who may have the victim’s belongings or know of their whereabouts.”
Anyone with any information is asked to call police on 101 quoting reference 5307546/15 or anonymously through Crimestoppers on 0800 555 111.