The Times was told the teenagers, aged 15 and 17, were from a regional area of WA and were staying with a person known to them in Koondoola when they were charged on July 7.
Police said the person who lived at the Tempany Way address was unaware of the boys’ alleged actions on July 6 until officers came to the house looking for them.
The boys, who are in state care, were remanded in custody on 12 charges after a hearing in Perth Children’s Court last Tuesday.
Two other teenagers, aged 13 and 16 from Camillo, were also charged and remain in custody.
The group was alleged to have committed multiple offences in Carlisle and East Victoria Park between 8.20am and 8.40am, including pushing over an 81-year-old woman and stealing an 84-year-old man’s car.
It was alleged a tomahawk weapon was being carried among them.
All four boys are expected to reappear in court on August 18.