Police have made two more arrests overnight in connection with the murder of Tony Fisher - bringing the total to 12.
A 21-year-old man and a 31-year-old woman were detained by officers on suspicion of murder.
Another nine people arrested on Tuesday, including seven men and two women, as well as a 14-year-old boy arrested on Thursday, have been bailed pending further enquiries.
Mr Fisher's body was found on Saturday afternoon at his home in Coningswath Road, Carlton.
Police want to speak to anyone who may have any information, including anyone who heard or saw any suspicious activity in Coningwath Road at 10.30-11pm on Friday, January 8 or anyone who spoke to Mr Fisher on that day.
You can call the incident room on 0115 8446913.
