A 57-year-old woman is dead after a freak accident involving a riding lawnmower in Milton, Ont.

Police said the Burlington woman was operating the lawnmower at her family’s farm on Derry Road, near Appleby Line, on Tuesday evening.

Family members started looking for her when she didn’t come home.

Police said it appears the lawnmower flipped into a small creek, fell on top of her and she drowned.

A family member tried to revive her, but the woman was pronounced dead on scene.

The woman’s name will not be released, police said, at the family’s request.

Halton police were called to the scene at around 7:30 p.m., and the collision reconstruction unit is investigating.

Foul play is not suspected.