Two boys aged 10 and 11 have been charged after a 14-year-old girl was pushed and robbed at a park in Cannington yesterday.
A third boy aged eight was not charged because of his age.
The girl was walking through Coker Park about 2.30pm when she was surrounded by three boys.
It is alleged the boys pushed her, grabbed her backpack and stole her mobile phone after she dropped it.
A police spokesman said police were called after the girl went to a nearby business.
"Police attended the Cannington train station where three boys matching the description provided by the victim were located," he said.
"It will be further alleged the victim's mobile phone was found near them in a garden bed."
A 10-year-old from Brookdale and an 11-year-old from Kenwick have been charged with aggravated robbery.