MILACA, Minn. — An 11-year-old died Friday afternoon, Sept. 6, near Milaca after the horse-drawn manure spreader he was operating with his 13-year-old brother hit a rock, throwing both juveniles off, the Mille Lacs County Sheriff's Office reported.

When deputies arrived on scene they learned that two juveniles, ages 13 and 11, had been operating the team of horses, a sheriff's news release said.

After the juveniles fell, the 11-year-old was then run over by the manure spreader causing his death, Sheriff Don Lorge reported. The 13-year-old sustained injuries that were not life-threatening.

The Anoka County Medical Examiner’s Office is conducting an autopsy.

Milaca is about 65 miles north of Minneapolis.