Detectives investigating the death of James Attfield in Colchester say they've been able to eliminate three more people from their inquiries.
33 year old Mr Attfield was stabbed more than a hundred times in an attack four weeks ago today.
Police issued CCTV pictures of people captured walking in the park. They say three more have now come forward. They also want to trace a couple seen on a bench in Castle Park. Two people have been questioned and released on police bail.
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.