Humberside Police are appealing for witnesses following an incident at a business on Market Place, Howden between 11pm and midnight on Saturday 3 June.
Two men and a woman were at the business when they were approached by a man and a woman who allegedly began arguing with the group. An altercation took place which left the three with minor injuries.
The man is described as being white, aged late 40s to early 50s, around 5ft 8ins tall, of stocky build with light brown hair. The woman was said to be younger than the man with a blonde bob hairstyle.
Anyone that witnessed the incident, or has any information about those involved, is asked to call 101 quoting crime reference 2276873 or Crimestoppers anonymously on 0800 555 111.