Sussex Police were called to reports of a large fight in Crawley involving up to 50 local youths at 7.42pm yesterday (Sunday July 27).
More than 20 separate calls were received from people about the fight in Dorsten Square, Bewbush, some reporting that weapons were being used.
Police units from Crawley and neighbouring areas webt to the brawl.
Six people were arrested on suspicion of affray and at least one on suspicion of assault on a police officer.
A number of people required hospital treatment.
There are not thought to be any serious injuries at this time.