Two men, aged 40 and 44, were due in court yesterday after being charged with the murder of a 43-year-old man in Barnsley earlier this week.
He was found seriously injured in a house on Pinder Oakes Cottages, Measborough Dike, on Monday and died in hospital two days later.
Officers found the injured man after a 44-year-old man attended Kendray Hospital with serious head injuries.
Enquiries into his condition led them to the other injured man.
There have been 19 other murder investigations launched in South Yorkshire since the beginning of the year.
Anyone with information about any of the deaths should call South Yorkshire Police on 101.
17. Simone Hancock
Simone Hancock, 55, was found stabbed to death at a flat in Ravenscroft Place, Richmond, Sheffield, on July 4. Kerry Taylor, 41, has been charged with murder. Photo: Claire Lewis
18. Claire Anderson
Claire Anderson, 35, was found unconscious in a property on Thorne Road, Doncaster, on July 11 and died a short time later. A 38-year-old man arrested on suspicion of murder was released under investigation. Photo: Claire Lewis
19. Marcus Ramsay
Dad-of-two Marcus Ramsay, 35, was stabbed to death during a disturbance in Horninglow Road, Firth Park, Sheffield, on August 8. Two 17-year-old boys, who cannot be named for legal reasons, have been charged with murder. Photo: Claire Lewis
20. Leighton Owen
Leighton Owen, 39, was found dead in a flat in Hatfield House, Grove Place, Balby, Doncaster, on August 26. Two women, aged 45 and 40, and a 21-year-old man, were arrested on suspicion of murder and released under investigation. Photo: Claire Lewis