Police have released the image of a man they would like to identify following an incident in Maple Cross.
Threats to kill were made by one man to another following a disagreement at a property on Woodland Road at around 8am on Friday 15 July.
The man in the image was in the area at the time of the incident and may be able to assist with enquiries.
Anyone with information is asked to contact PC Sam Coomber by email via Samuel.Coomber@herts.police.uk
Information can also be reported online at the Hertfordshire Constabulary website, speak to an operator in the Force Communications Room via the online web chat or by calling the non-emergency number 101, quoting crime reference 41/56640/22.
Alternatively, you can stay 100% anonymous by contacting the independent charity Crimestoppers on 0800 555 111 or via their untraceable online form.