Police were called to a shop in Worcester Street in Gloucester last night after a report of an assault involving weapons.
Armed officers attended the scene and arrested three men in their 20s and a man in his 30s, all on suspicion of affray.
Two men who were assaulted in the incident have been taken to hospital for their injuries to be assessed.
Anyone who has not yet spoken to officers and has any information or footage of what happened is asked to provide this by completing the following online form and quoting incident 375 of 17 April: https://www.gloucestershire.police.uk/tua/tell-us-about/cor/tell-us-about-existing-case-report/