Three people arrested in connection with the death of a man in Northlands Park, Basildon, have been released on bail.
On Wednesday, two men, aged 31 and 46, were arrested on suspicion of murder while a 17-year-old was also arrested on suspicion perverting the course of justice.
Both men have been released on bail, while the 17-year-old boy will face no further action.
In total, police have now made eight arrests in connection with the incident.
Officers were called to the park at 1.35am on Sunday where they found a man in his 40s with a stab wound to his stomach.
He was taken to hospital but later died there.
Senior investigating officer Detective Chief Inspector Scott Egerton, from the Kent and Essex Serious Crime Directorate, said: “We know there may still be people out there who have information on this incident and have not yet come forward to speak to us and we would encourage them to do so.
“Each person who has been released on bail is still under police investigation and we anticipate making further arrests in the coming days and weeks.”
If you have any information you can submit a report online at https://www.essex.police.uk or use the ‘Live Chat’ button to speak to an online operator between 7am-11pm. Please quote incident 114 of 11 July.
You can also call 101 or contact Crimestoppers anonymously on 0800 555 111.