Police are investigating an alleged brawl that broke out at Heritage Park in Castle Hill on Tuesday.
Officers said they received reports from residents on Banks Road, Castle Hill that a group of about 25 people were fighting, some armed with poles and other weapons.
Police allege one group, of about 10 people, turned up to the location to fight before another group, of about 25 people, arrived and began running towards them.
Police believe the people were about 19.
The second group was described as being of Middle Eastern appearance.
One man was treated by paramedics for superficial cuts to his shoulder and neck and a silver Hyundai Getz had its windows smashed and bonnet dented.
Police said they were not aware of the motivation behind the brawl.