Humberside Police are appealing for witnesses following an altercation between two men in Grimsby.
The incident happened at around 3.30pm on Saturday, May 20 on Stanley Street.
One of the men sustained a wound to his leg in the incident and was taken to hospital for treatment.
Both men, aged 21 and 25, were arrested on suspicion of affray and have since been released under investigation while enquiries continue.
Anyone that witnessed the incident, and has not already spoken to police, should call 101 quoting crime reference 2273134 or Crimestoppers anonymously on 0800 555 111.