policję

In a sentence

• Muszę zadzwonić na policję.

  I need to call the police.

  Here, 'policję' is the accusative form of 'policja,' used to indicate the direct object in the sentence.

• Widziałem scenę, jakby ktoś wołał policję.

  I saw a scene as if someone was calling the police.

  'Policję' is again in the accusative case, functioning as the direct object of the verb describing an action about contacting the police.

• Straciłem telefon, więc zgłosiłem to policji.

  I lost my phone, so I reported it to the police.

  In this sentence, another form of 'policja' ('policji,' the dative form) is used to indicate the indirect object to which the report was made.