Police were forced to break up an out-of-control gathering of about 80 young people at a fast-food outlet in High Wycombe last night.
Officers broke up a fight between about 20 youths outside a Kalamunda Road tavern just after midnight.
The group then made their way to a nearby fast-food outlet, where they were joined by about 60 people.
A police spokeswoman said it was believed some of the youths made their way to the business after a party.
“A large fight broke out inside the store and officers dispersed those fighting but the rest of the group remained in the area and refused to move,” she said.
Two people were arrested and two were summonsed.
Officers also issued three move-on notices and two juvenile cautions.
Sixteen juveniles were detained and taken to Midland Police Station so they could be collected by their parents.