The incident occurred outside the Cube. Picture: Alison Bagley.
Two girls, including one aged just 12, have appeared before magistrates on criminal damage charges.
She was arrested alongside a 15-year-old accomplice after a 21-plate Skoda Octavia police vehicle was damaged outside the Corby Cube on January 8.
They appeared before Northamptonshire Youth Court last Tuesday (February 8).
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The elder girl pleaded guilty to a charge of criminal damage and was given a three month referral to an out-of-county youth offending panel.
Her younger friend also admitted her part in the incident and her case was adjourned until the spring.
Neither girl can be named as under-18s have automatic anonymity when appearing before the youth court.