A three-year-old boy was injured on the side of the road after a person fled the accident.
Police believe a person in a blue vehicle hit the child on The Strand in Bayswater, east of Perth, between 12.30pm and 1pm on Friday.
The driver of the vehicle is said to have stopped at the scene.
The toddler was found injured on the roadside with a serious leg wound and was taken to Perth Children’s Hospital by his family.
Police are asking anyone who was driving a blue car in the area at the time to come forward and contact Crime Stopper.
They would also like anyone who witnessed the crash or saw a blue vehicle in the area at the time of the crash to upload their footage to police.
Police believe a person in a blue vehicle hit the child on The Strand in Bayswater, east of Perth, between 12.30pm and 1pm on Friday