Posters appealing for information about the death of Simon Dobbin have been put up around Roots Hall ahead of Southend United’s first home game of the season.
Simon, who was a Cambridge United fan, died in October last year five years after sustaining permanent brain damage following an assault.
He was attacked in East Street after Blues’ home game against Cambridge United on 21 March 2015.
Earlier this week a report from a post-mortem examination identified a link between the assault and Simon’s death.
Essex Police are now investigating to see if they can identify who was responsible.
Acting Detective Superintendent Stephen Jennings, who’s leading the investigation, said: "I know there will be people who were at the game in March 2015 who saw what happened to Simon.
"I need them to come forward and speak to my team and I would urge them to do so even if they spoke to officers who investigated the assault at the time.
"If you’re going to Roots Hall this weekend to watch Southend’s game, you’ll see posters up around the ground appealing for information.
"Simon’s story has touched people across the country. It is an absolute tragedy we need to get justice for him and his family.”
If you have any information about what happened to Simon please call Essex Police on 101 or report it on their website.
You can also use the ‘Live Chat’ button on their website and speak to an online operator between 7am and 11pm.
Alternatively you can contact Crimestoppers and you will stay 100 percent anonymous.
Crimestoppers won’t ask your name or any personal details, they won’t record your call and your number won’t be displayed.
When information is passed from Crimestoppers to the police, it doesn’t contain any information which could identify you.