A man has been re-arrested on suspicion of the murder of James Attfield in a Colchester park earlier this year.
The 33-year-old was found with more than 100 stab wounds in Castle Park, off Guildford Road, shortly before 6am on Saturday March 29.
Yesterday, an 18-year-old man was arrested in Southend and is currently being questioned by detectives at a police station in Essex.
He was one of seven people arrested in connection with Mr Attfield's killing five days earlier.
The other six people - a 27-year-old woman from Colchester, a 27-year-old man from Colchester, a 57-year-old man from Colchester, a 25-year-old woman from Southend, a 23-year-old woman from Ipswich in Suffolk and a 31-year-old man from Colchester - were later released on police bail pending further enquiries.
Two other men, both aged 33, also remain on police bail until late September pending further enquiries after they were arrested in connection with Mr Attfield's death earlier this summer.
In total, nine people have been arrested as part of the murder investigation.
Detectives investigating the murder of Nahid Almanea have issued an efit of a man they would like to speak to.
The mother of Jim Attfield spoke to Serena Sandhu about her son and the pain his senseless murder has caused to the family.