Anyone with information about the fatal stabbing should call South Yorkshire Police on 101 and quote incident 856 of March 6.
Crimestoppers can also be contacted, anonymously, on 0800 555111.
1. Fatal stabbing
Jordan Marples-Douglas, aged 23, was stabbed to death in a house in Woodthorpe Road, Woodthorpe, on Friday, March 6. Photo: SYP
2. Fatal stabbing
Paramedics called to the house found that Jordan had suffered multiple stab wounds in the attack. A post mortem examination revealed that a wound to his chest proved fatal. Photo: Dean Atkins
3. Fatal stabbing
Police officers alerted to the stabbing immediately sealed off the house and street outside and launched a murder inquiry after Jordan died. Photo: Dean Atkins
4. Fatal stabbing
Floral tributes have been left close to the murder scene. Photo: Dean Atkins