A man who suffered head injuries during an incident in Seaside Road, Eastbourne has now died.
Police are now treating the case as one of murder.
Lee Molineau, 46, of no fixed address, died in the Hurstwood Park neurological unit, Haywards Heath, on Tuesday night.
He had been in a critical condition since the assault on Wednesday, July 24 and his family were at his bedside.
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Councillors in Bournemouth are due to approve an increase in council tax of almost 5% for the next financial year.
Tuesday morning's weather for the west of the region
Tuesday morning's weather for the east of the region