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.
13. Amy Stringfellow
Amy Stringfellow, 26, was found critically injured in a house on Dryden Road, Balby, Doncaster on June 5. Terence Papworth, aged 45, of Dryden Road, Balby, is accused of murder. Photo: Claire Lewis
14. Unnamed woman
On June 8, the body of a 28-year-old woman, who has not yet been named, was found in a property on Main Street, Mexborough, Doncaster. Two men were arrested over the death. Photo: Claire Lewis
15. Stephen Riley
Stephen Riley, 43, was found injured in Darley Avenue, Athersley, Barnsley, on June 26 and died the following day. A 37-year-old man was arrested on suspicion of murder and a 41-year-old woman was held on suspicion of assisting an offender. Photo: Claire Lewis
16. Kimberley Smith
Kimberley Smith, 35, was found unconscious in a property on Pavilion Way, Shiregreen, Sheffield, and died in hospital later that day. A 22-year-old man was arrested on suspicion of murder and bailed. Photo: Claire Lewis