Shortly after 8.15pm on Monday (5 August) police were called to The Level, Brighton, where a 50-year-old man involved in a fight had been stabbed in his left arm with a knife.
The victim declined to go to hospital and was treated at the scene by paramedics.
Officers used Taser to detain another man at the scene.
Anyone who saw what happened or who may have information about the incident is asked to contact police online or by phoning 101, quoting serial 1430 of 05/08.
Alternatively they can contact the independent charity Crimestoppers anonymously, telephone 0800 555 111.
A 53-year-old man has been arrested on suspicion of causing grievous bodily harm.
Author: Nigel Jarrett
Ref: SXP 55175/2019