Three 15-year-olds face 82 charges after an alleged crime spree in Melbourne's north-west in the early hours of Sunday morning.
The trio allegedly forced their way into homes in Maribyrnong, Airport West, Hillside and Truganina between 2.45am and 5.25am, stealing mobile phones, an iPad, and luxury vehicles.
In one instance, a victim suffered an upper body injury.
The boys have been charged with offences including aggravated burglary, attempted burglary, home invasion, assault and theft of a motor vehicle.
The stolen cars included a Porsche Cayenne, VW Golf, Subaru Outback and two Audi Q7s.
The Porsche Cayenne has not been recovered.
Police are investigating whether the three boys, from Frankston, Wyndham and Footscray West, acted alone. They were remanded to face a children's court at a later date.
Sunday night's attacks come days after data was released showing a sharp rise in aggravated burglaries in Victoria.
Data released on Thursday by the Crime Statistics Agency show aggravated burglaries surged 40 per cent last year.
In 2015, there were 3017 violent break-ins throughout the state. In 2016, there were 4242 - an increase of 1225.
Police suspect that youths breaking into houses to steal keys, and then cars, are behind the increase.
Detectives from Maribyrnong Crime Investigation Unit are investigating.
Anyone with information is urged to call Crime Stoppers on 1800 333 000 or submit a confidential crime report at www.crimestoppersvic.com.au