A 5-year-old South Florida boy is recovering after a lawn mower driven by his grandfather accidentally severed his left foot.

Palm Beach County Fire Rescue officials say Jeffrey Stearns was sitting on his grandfather's lap when he either jumped or fell off the riding mower Wednesday.

Sixty-year-old Charlie Langston was unable to stop the mower. He wrapped the boy's foot in a bag. The boy was taken to the hospital. It's unclear whether his foot can be reattached.

The American Academy of Pediatrics about 9,000 children are injured every year by lawn mowers.