Investigators say the pair traded the goods for heroin in St. Louis.
All were parked in the 2400 block of Laclede Station.
Belleville police say a 7-year-old boy is one of two juveniles arrested in connection with a series of break-ins of vehicles last weekend.
Suspect in Madison County reportedly stole $7,000 worth of goods in string of home break-ins.
Numerous break-ins have been reported near Ameristar Casino.
Arrests may be connected to larger series of break-ins.
Suspect may have stolen from vehicles in at least six locations
The break-ins occurred at Pheasant Run Apartments before 2 a.m. Wednesday.
Police believe drug habit may be fueling rash of crimes. Same suspect may be hitting other nearby towns.
Nearly two-dozen cars broken into; electronics, cameras and knives targeted.