Police have arrested another two juveniles over an alleged crime spree through East Victoria Park and Carlisle on Sunday.
The dog squad and a large number of officers surrounded a property in Koondoola, just before 1pm.
Two male teenagers aged 15 and 17 were taken into custody.
Earlier today two teenagers made brief appearances in Perth Children's Court charged over their part in the attacks.
A 16-year-old boy and a 13-year-old boy, both from Koondoola, were charged after a police raid late yesterday.
Police allege the boys were part of a gang of four who terrorised residents in Carlisle and Victoria Park yesterday morning, attacking an 81-year-old woman and stealing an 84-year-old man’s car.
One of the offenders was armed with a tomahawk during the alleged spree, with their stolen car later found burnt out in Koondoola.
Both boys were remanded in custody to appear in court next month, facing identical charges including with aggravated armed robbery, aggravated robbery, aggravated burglary, motor vehicle theft, assault, criminal damage and stealing.
A police spokesman said information from the public was crucial in helping track the offenders, with investigations continuing into the other people involved in the crimes.
Anyone with information should call Crime Stoppers on 1800 333 000.