SOUTHWEST MIDDLESEX, Ont. - Police in Middlesex County say a young girl has died after a three-vehicle crash that also left two others seriously injured.

Investigators say the collision occurred at an intersection in Southwest Middlesex Township on Monday evening and involved a tractor-trailer and two passenger vehicles.

They say three people from one vehicle were hurt and one of them -- four-year-old Maria Bunder of Appin, Ont. -- died in hospital.

Roads in the area were closed for several hours as officers combed the scene.

They have since been reopened, and the investigation continues.