Huron County OPP are appealing for witnesses in last Friday's crash in Howick Township involving a vehicle and horse and buggy.
The crash happened on Howick-Turnberry Road near Belmore Line west of Clifford around 6:30 PM.
The driver of the horse-drawn buggy, a 46-year-old man, and two children ages 14 and 2 were taken to hospital with non-life threatening injuries.
Investigators are particularly asking for those who may have approached the scene from a westerly direction after the collision occurred.
Huron County OPP and Technical Traffic Collision Investigators are still determining what caused the crash.