Cumbria Police are investigating an assault at Longway, Barrow.
It took place at about 4pm on Sunday July 3.
It is believed three people, all male, were involved – one on a bicycle.
The assault took place on the street and it is alleged one man kicked another man, aged in his twenties, to the head and body, causing serious but not life-threatening injury.
The injured man was taken to Royal Lancaster Infirmary.
A man, 22, has been arrested on suspicion of causing grievous bodily harm and is currently in custody.
Anyone with information can report online at www.cumbria.police.uk/report-it, quoting incident 185 of July 3.
You can also phone on 101.
Alternatively, you can contact Crimestoppers anonymously on 0800 555 111.