Police are appealing for information over the whereabouts of a Wombwell man in the week leading up to his murder.
John Gogarty, 65, was found dead on Friday, July 17 at his home on Marsh Street.
Detective Chief Inspector Phil Etheridge said the last known whereabouts of Mr Gogarty was at his daughter's graduation in Northumbria on Thursday, July 9.
He wants to speak to anyone who saw or spoke to Mr Gogarty between Friday, July 10 to when his body was discovered on Friday, July 17.
Mr Gogarty died of multiple stab wounds.
Police believe he knew his killer.