A 3-year-old boy died Thursday evening after the child was run over by a lawnmower near Snohomish, WA., deputies said.

Crews responded after reports of a person under a lawnmower.

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Deputies said the boy was riding on his father’s lap when he fell off and went under the lawnmower.

He was pronounced dead at the scene.

Deputies said they’re seeing this as an accident. source

According to deputies, the father wasn’t under any influence.

This is a developing story. Check back for updates.