An investigation is underway after two objects were lit and thrown into the yard at Palmerston North Police Station overnight.
The impact caused very minor damage to two vehicles.
This will not affect resourcing or deployment in the area.
The investigation team is reviewing CCTV footage and Police ask anyone with information about this incident to call 105 or Crimestoppers anonymously on 0800 555 111.
Issued by Police Media Centre