POST MORTEM results have shown that Darren Croxton died from stab wounds inflicted by a knife with a blade at least 4in long.
Mr Croxton died in hospital on Monday (January 23) after an alleged pre-planned fight in woods near Bramble Drive in Hailsham.
He was found collapsed in the road on Sunday and rushed to Royal Sussex County Hospital where he died the next morning, around 7.20am.
The exact type of knife used in the fight is not known at the moment by Sussex Police.
Five teenage boys arrested on suspicion of attempted murder were initially bailed, but his has now been cancelled and they are no longer part of the police investigation.
Three men have also been released from custody with no further action and are now being treated as witnesses.
Two teenage boys arrested yesterday (January 23) on suspicion of murder, remain in custody.
Detective Chief Inspector Jeff Riley, from Surrey and Sussex Major Crime Team, said: “This is a fast-paced investigation and we are deploying a large amount of resources to bring whoever is responsible for this awful crime to justice.
“Local officers and detectives are continuing with house to house inquires, viewing CCTV, along with local high visibility patrols and specialised search dogs will also be deployed today (January 24) to help find the murder weapon and any other evidence.
“I would like to appeal once again to members of the public who have information however insignificant they think it is, to contact my team of officers in confidence.
“Please call 101 quoting Op Consul or the independent charity Crimestoppers anonymously on 0800 555 111.”
The Wealden District Police Commander, Chief Inspector Dick Coates said: “I have every faith that the people of Hailsham, who are a very close-knit community will rally round and help us to get justice for the family of Mr Croxton.
“My officers are hear to help and listen to any concerns the community has. I have been speaking with local people, schools and businesses and will continue to do so over the coming days.
“A street meeting will be held in the area within the next week which I will attend and details of this will be circulated.
Police cordons and scene guards will remain in the area, and Sussex Police thank the local community for their continued patience and support.