Tommy Ward, 80, was found badly injured at his home in Salisbury Road on Thursday October 1 2015.
He was receiving ongoing care following the incident but sadly died at Rotherham Hospital last night. A post-mortem examination will be carried out over the coming days to determine what caused his death.
A substantial amount of money is believed to have been taken from Mr Ward?s home, along with a safety deposit box, when the incident happened. A box similar to the one that was reported stolen was recovered in the Kilnhurst area of Rotherham around two weeks later.
Detective Chief Inspector Vicky Short said: “The police investigation surrounding what happened is very much ongoing and officers would still like to speak to witnesses, or anyone who has information about what happened. I urge anyone who has even the slightest piece of information to come forward and tell us what you know.”
If you recall any information that could help officers, please call 101 or email [email protected], quoting incident number 408 of 1 October 2015.
Alternatively, call Crimestoppers anonymously on 0800 555 111.
Two 19-year-old men were previously arrested on suspicion of attempted murder and burglary. They have been released with no further action.