A hit and run accident in Perth has seen a toddler killed.

Police say the 22-month-old boy was run over in front of a house in Dunmore Crescent in Merriwa shortly after 5pm on Friday.

He later died in hospital.

The driver has been identified and police have issued a plea for him to come forward.  He allegedly drove from the scene without stopping.

Major crash investigators have attended the scene of the accident and are seeking information from anyone who was a witnesses to the accident.

Image source:  Shutterstock