Killer onÂ the loose seven weeks after fatal stabbing in Sheffield
The killer of a Sheffield man stabbed to death in Sheffield seven weeks ago is still on the loose.
Kavan Brissett, agedÂ 21, was stabbed to death in an alleywayÂ off Langsett Walk, Upperthorpe, on Tuesday, August 21.
He received emergency first aid from passers-by and residents at the scene before paramedics arrived to take him to hospital.
Kavan underwent surgery but died in hospital four days later when his life support machine was switched off.
HeÂ died as a result of a single stab wound to the chest.
Detectives are treating theÂ stabbing as a targeted attack but have not yet revealed why anyone would want him dead.
Four arrests have been made so farÂ but nobody has yet been charged.
An 18-year-old man was arrested on suspicion of attempted murder and three boys -Â two aged 17 and one aged 16 - were arrested on suspicion of conspiracy to rob.
TheyÂ have all been bailed pending further enquiries.
Detectives investigating the murderÂ are also trying to trace 29-year-old Ahmed Farrah, whoÂ is believed to hold vital information.
Farrah, whoÂ has links to Broomhall, is said to know he is wanted for questioning but is actively evading arrest.
South Yorkshire PoliceÂ has warned that anyone found shielding himÂ faces prosecution.
Kavan's funeral was held in SheffieldÂ earlier this week.
Anyone withÂ informationÂ should call South Yorkshire Police onÂ 101 or the incident room on 01709 443507.Â Â