Detectives investigating the murder of James Attfield are renewing their appeal for a man and woman to come forward who were seen close to where his body was found.
The man and a woman were seen sitting on a bench by the lake in Castle Park, in Colchester, at around 11.30pm to 11.40pm on Friday March 28.
Mr Attfield was found seriously injured with more than 100 stab wounds in Castle Park, off Guildford Road, shortly before 6am on Saturday March 29. He died a short time later at the scene.
Officers are still piecing together the 33-year-old student’s movements between 10pm on Friday March 28 when he left the River Lodge Public House and the time when he was found injured.
They are also attempting to identify three people depicted in efits and a number of people caught on CCTV who they need to eliminate from their enquiries.
A 27-year-old woman from the town was arrested on Friday April 11 in connection with Mr Attfield’s death and is currently on police bail until Thursday April 24 pending further enquiries.
Anyone with information is asked to call Essex Police on 101 or Crimestoppers anonymously on 0800 555111.