Essex Police have today renewed their appeal for help to track down the killer of a man who was stabbed to death in a Colchester park.
A 38-year-old who was arrested in connection with the killing of 33-year-old James Attfield has been released without charge.
Watch Kate Prout's report.
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.