Two men were stabbed in a fight outside a golf club during an evening of fireworks.
Officers were called to Huntswood Golf Club in Burnham, near Slough, Berkshire, shortly before midnight on Sunday, after a fireworks display in the grounds earlier that evening.
During the display, a group of young men and women were spotted smoking what was believed to be cannabis and were asked to leave the premises.
As they were being escorted outside, a fight broke out between them and members of the club and its staff.
Two men were taken to Wexham Park Hospital, Slough, where they were treated for multiple stab wounds.
Their injuries were not life-threatening.
Several other people also suffered minor injuries.
Police are appealing for people who may have been at the event and witnessed the incident to contact them.