Essex Police say CCTV footage has revealed a Polish man killed in Harlow died after a single punch to the head.
Detectives are investigating the murder of Arek Jozwik as a possible hate crime.
The 40 year-old died in hospital two days after being attacked last month.
He suffered head injuries and was taken to the Princess Alexandra Hospital. He was later transferred to Addenbrooke’s Hospital in Cambridge, where he died on Monday evening, August 29.
A 43-year-old man from Harlow was taken to the Princess Alexandra Hospital with suspected fractures to his hands and bruising to his stomach. He has since been discharged from hospital.
During the course of police enquiries, a third man, aged 40, was also found to have been assaulted.
DCI Martin Pasmore says “From viewing CCTV we know that Arek and two friends went to TGF Pizza takeaway in The Stow, Harlow, at about 11.10pm on Saturday August 27 and ordered a pizza.
“They then went outside and spoke with a group of youths as well as other passers-by for up to about twenty minutes.
“However it can be seen that the atmosphere then changed and there was a verbal argument.
“It is during this altercation that Arek receives a single punch to the face, causing him to fall backwards and bang his head on the ground.
“There followed a short scuffle between Arek’s friends and a few other people, before the suspects leave the scene.
“Arek died the following Monday and a post mortem examination has established a provisional cause of death as a head injury.
“I know there were numerous people in The Stow, many of whom will have witnessed the incident and would have been shocked by what they saw.
“I am appealing for anyone who was in the area between 10pm and midnight that Saturday to please come forward. In particular, I would like to speak to a man wearing shorts who was talking to the victims beside a large flower bed before the incident.”
Chief Superintendent Sean O’Callaghan said: “We fully understand that residents in Harlow have been left deeply shocked by the murder of Arek Jozwik, and the assault of two Polish men in Kitson Way on Sunday September 4.
Anyone with information about the murder investigation is asked to contact the Harlow Major Investigation Team on 101. Alternatively, they can contact Crimestoppers anonymously on 0800 555111 or www.crimestoppers-uk.org
Anyone who wishes to report a hate crime can call 101 to report all non-urgent cases or report them online at www.essex.police.uk
Always dial 999 if you or someone else is in immediate danger.