The 53-year-old wheelchair user died on Monday.
Detectives investigating the death of a man in Warrington are appealing for information and dashcam footage.
Michael Mairs died at Warrington District General Hospital on Monday 28 October.
The 53-year-old had been in hospital since Sunday 6 October when he was assaulted on Crown Street, Warrington at around 12.15pm.
Two other people also sustained minor injuries during the incident.
Detective Chief Inspector Simon Blackwell, from Cheshire Police Major Investigation Team, said: “Our thoughts are with Mr Mairs family at this difficult time and we are committed to doing all we can to establish exactly what took place.
“While a man has already been arrested and charged in connection with the assault, following the death we are now looking to renew our appeal for information.
“The incident took place in at around 12.20pm on Sunday 6 October under the railway arches at the junction of Crown Street and Winwick Street. This is an extremely busy part of Warrington town centre and also close to Central Train Station.
“As part of our investigation I’m keen to hear from anyone who was in the area at the time of the incident and witnessed what happened or anyone with any information which may aid the investigation.
“The same goes for anyone who was driving in the area and believes they have any dashcam footage which may be relevant to the investigation.”
Anyone with any information is asked to contact Cheshire Police on 101 quoting IML 550613 or visit https://www.cheshire.police.uk/contact/general-enquiries. Information can also be submitted anonymously, via Crimestoppers, on 0800 555 111.
Dashcam footage can be submitted online at https://cheshireconstabulary.egressforms.com .