Officers investigating the murder of Terry Leeks in Basildon last year have been posting leaflets with details of the Crimestoppers reward to homes in the Northlands Park area.
Forty-six year-old Terry died after being assaulted in the park in the early hours of 11 July.
In total, 13 people have been arrested in connection with Terry’s murder.
Four of them – two boys aged 15 and 17 and two men aged 19 – released under investigation.
