A man has been arrested after seven people were taken to hospital following a fight “possibly involving a knife”.
The “serious altercation” took place at a house in the Paddocks, Nuthall, Nottinghamshire, at about 23:10 GMT on Thursday.
Nottinghamshire Police said the fight involving a “number of men” led to injuries caused by a weapon, which may have been a knife.
A 21-year-old man has been arrested on suspicion of affray.
The force has appealed for more information.