Police in Colchester have widened their hunt for the weapon used in a frenzied attack on a vulnerable man.
James Attfield, 33, from East Bay in Colchester, was struck down in Lower Castle Park early on Saturday morning - he suffered 102 knife wounds before he died.
Detectives are still struggling to find a motive for the attack.
Click below to watch a report from ITV News Anglia's Victoria Lampard.
Detectives investigating the murder of James Attfield are putting up new posters in pubs to try and identify six mystery men.
An appeal for information on the murder of James Attfield in Colchester will feature on the BBC Crimewatch programme tonight.
Detectives investigating the murder of James Attfield are renewing their appeal for a man and woman to come forward.