James Attfield murder inquiry: Couple filmed in park traced
A man and woman seen on CCTV footage from the night a man was stabbed 102 times in a park have been traced after an appeal on BBC Crimewatch.
James Attfield, 33, was found in Lower Castle Park in Colchester early on 29 March. He died soon afterwards.
Two people seen walking through the park at 02:19 are due to speak to officers, police said.
A man and woman, both 27, were arrested last week in connection with the death. They are due to answer bail in May.
Eight people seen on CCTV in the park have now been traced, but 15 are yet to come forward.
Det Con Insp Simon Werrett said Monday's Crimewatch programme was "extremely useful" but officers still need to find out what happened to Mr Attfield between leaving the River Lodge pub at 22:00 on 28 March and when he was found at 06:00.
Knives found in the park are not linked to Mr Attfield's death, he added.
"We are convinced that the knife is still out there and so are the killer's clothes, which are likely to be covered in blood," he said.
"Someone must know where that knife and the clothes are."