Ten searches were conducted in Prestons, Panania, Minto, Revesby, Glenfield, Lurnea, Hinchinbrook, Ingleburn and Fairfield.

Cash, a gel blaster, a tracker and multiple mobile phones were seized.

An 18-year-old man was arrested in Glenfield and taken to Campbelltown Police Station, where he was charged with stealing a motor vehicle and participating in a criminal group.

A 16-year-old boy was arrested in Prestons and charged with multiple offences, including two counts of aggravated break and enter and two counts of stealing a motor vehicle.

A 17-year-old boy was arrested in Minto and charged with knowingly directing activities of a criminal group and seven counts of stealing a motor vehicle.

A 17-year-old boy was arrested in Liverpool and charged with stealing a motor vehicle and entering a building or land with the intent to commit a criminal offence.

All four were refused bail and appeared at Campbelltown Local Court today.

Three further arrests were made: an 18-year-old man in Badgerys Creek, a 16-year-old boy in Hinchinbrook, and a 15-year-old-boy in Fairfield.

Police said the trio were assisting with inquiries.