Authorities arrested seven juveniles after a fight in the carnival midway area of the Alameda County Fair early Fourth of July evening, according to a sheriff's office spokesman.
Sgt. Ray Kelly said the fight was quickly resolved after it broke out. The cause remains under investigation, and additional information about the arrestees was not released.
All in all, Independence Day at the fair -- a big draw because of the annual fireworks spectacular that night -- was "a success" with more than 40,000 people in attendance Tuesday, Kelly added.
"We always expect some small groups to cause problems. It was a good day despite some small incidents," he said.