A man arrested on suspicion of murdering a 57-year-old Polish national has been bailed.
Janek Brakonecki, who lived in London, was found with critical injuries in a carpark off Leytonstone High Road shortly before 8am on Saturday, July 7.
He was pronounced dead at the scene.
A post-mortem examination held on Sunday was inconclusive and officers await the outcome of further tests.
On Saturday, a man in his 60s was arrested on suspicion of murder. He has been bailed to a date in August pending further enquiries.
Detectives from the Homicide and Major Crime Command are investigating and urging witnesses to come forward.
DCI Gary Holmes said: “We are making urgent enquiries to establish the circumstance that led to Mr Brakonecki’s death.
“At this time, we must keep an open mind as to the cause of death, and I am appealing for any witnesses or anyone with information to come forward and speak with police.”
Anyone with information is asked to call the incident room on 020 8345 1570. To remain anonymous call Crimestoppers on 0800 555 111.
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