Warwickshire Police is appealing for information following an altercation in Nuneaton on Monday night.
A spokesperson from the force said: "Between 5pm and 8pm, a disturbance took place involving a number of youths in the park area off Cedar Road, Nuneaton.
"Three 15-year-old boys, all from the Nuneaton area, were arrested on suspicion of robbery and assault. They are currently in police custody.
"Officers would like to speak to anyone who may have witnessed the incident or who may have camera or CCTV footage of the incident."