A driver has been taken into custody after picking up a girl outside of her school in Warnbro.
The nine-year-old was walking to school around 8.45am on Friday when police say she was picked up in an unknown vehicle.
"A number of police resources were immediately deployed to the area to locate the child," a WA Police spokesperson said.
"The child was located outside a supermarket in Port Kennedy area a short time later."
A man in his 30s, believed to be the driver of the vehicle, is in custody and assisting police with inquiries.