Three boys will face charges for allegedly stealing a piņata and burning it in a fire that destroyed a shed containing pole-vaulting equipment at North Medford High School Sunday evening.

Three boys will face charges for allegedly stealing a piñata and burning it in a fire that destroyed a shed containing pole-vaulting equipment at North Medford High School Sunday evening.

The fire caused about $6,000 worth of damage, a police report said. One of the boys suffered minor burns on his side as he tried to stomp out the spreading flames, Detective Sgt. Mike Budreau said.

Medford police said three boys — ages 8, 9 and 11 — stole food and a piñata from a vehicle parked at the school and took the stolen items inside the shed near the track. They set the piñata on fire and the flames quickly spread, destroying the shed and foam athletic pads and other equipment in it and sending a thick cloud of black smoke billowing across the athletic fields.

The shed was valued at $1,500 and about $1,500 worth of equipment stored there was ruined, a police report said. Police said a section of the track sustained about $3,000 worth of damage from the fire.

Investigators suspect the 8-year-old and the 11-year-old set the fire. The two boys were charged with second-degree arson, unlawful entry to a vehicle, third-degree theft and third-degree criminal mischief.

The 9-year-old was with them, but didn't start the fire, police said. He was charged with unlawful entry to a vehicle, third-degree theft and third-degree criminal mischief.

All three boys were cited and released to their parents. The 8-year-old and the 9-year-old are brothers, police said.