Police have identified a mother and son killed in a six-vehicle crash near Caledonia Friday afternoon.

They say 28-year-old Amanda Fleming and her three-year-old son Denver Sherk died after their SUV crossed the road on the Highway 6 bypass and was hit by a transport truck.

The SUV then struck four other vehicles. Fleming was ejected and pronounced dead at the scene, while her son died later in hospital.

The other five drivers weren't hurt.