Policija je pronašla oružje.

In Croatian, policija is a singular noun, even though in English the police is usually treated as plural.

So Croatian says:

• Policija je pronašla oružje. = The police found a weapon / the weapon / weapons depending on context

Notice the verb is singular too:

• je pronašla = has found / found with a singular subject

Also, policija is grammatically feminine, which is why the past participle ends in -la.

Because the verb form must agree with the subject policija.

• policija = singular feminine
• so the past participle is pronašla

Compare:

• on je pronašao = he found
• ona je pronašla = she found
• oni su pronašli = they found

Since policija is grammatically feminine singular, Croatian uses je pronašla.

This is the normal Croatian past tense structure.

It is made with:

• the auxiliary biti (to be) in the present tense
• plus the past participle

So here:

• je = has/is auxiliary, 3rd person singular
• pronašla = past participle

Together, je pronašla means found or has found, depending on context.

This is very common in Croatian:

• Ivan je došao. = Ivan came / has come
• Ana je vidjela psa. = Ana saw the dog

Oružje is the direct object, so it is in the accusative case.

However, for many neuter singular nouns in Croatian, the nominative and accusative forms are the same. That is what happens here.

So:

• nominative: oružje = weapon
• accusative: oružje = weapon

That means the form does not change, even though the case does.

Croatian does not have articles like English the and a/an.

So oružje can mean:

• a weapon
• the weapon
• sometimes even weapons in a more general sense, depending on context

And policija can mean:

• the police
• police

You understand which one is meant from the situation, not from an article.

Yes. Pronaći is a perfective verb.

That means it presents the action as completed: the finding was successfully done.

So Policija je pronašla oružje suggests:

• the police completed the action
• they succeeded in finding it

A related imperfective verb is pronalaziti or sometimes nalaziti, depending on meaning and context.

Very roughly:

• pronaći = to find in the sense of to manage to find / to discover
• pronalaziti = to be finding / to find repeatedly / to find in an ongoing sense

In a simple completed event like this sentence, pronaći is the natural choice.

Yes. Croatian word order is more flexible than English word order because case endings and verb forms carry a lot of grammatical information.

The neutral order is:

• Policija je pronašla oružje.

But you can also hear:

• Oružje je pronašla policija.
• Policija je oružje pronašla.

These alternatives usually change emphasis, not the basic meaning.

For example:

• Oružje je pronašla policija. puts more focus on the weapon
• Policija je pronašla oružje. is the most straightforward, neutral statement

Yes. Našla from naći is very common and often more everyday in speech.

So these are both possible:

• Policija je pronašla oružje.
• Policija je našla oružje.

Both mean roughly the same thing here: The police found the weapon.

Often:

• pronaći can sound a bit more formal or like locate/discover
• naći is very common and everyday

But in many contexts they overlap a lot.

Grammatically, oružje is singular neuter.

However, it is also a collective/mass-type noun in many contexts, like weaponry or arms in English. So depending on context, it can refer to:

• a weapon
• weaponry
• arms

In this sentence alone, without more context, oružje is best understood as weapon or weapons/weaponry, depending on what the larger text is talking about.

So the grammar is singular, but the real-world meaning may be broader.

A rough English-friendly guide would be:

• o-RUZH-ye

More carefully:

• o as in a short o
• ruž has the ž sound, like the s in measure
• je sounds like ye

So oružje is approximately o-ROO-zhye, with the stress usually on ru.

And pronašla is roughly:

• pro-NA-shla

The cluster šl may feel tricky at first, but it is very common in Croatian past-tense forms.

No. Croatian usually does not need a subject pronoun unless you want emphasis or contrast.

Since the noun policija is already there, adding ona would normally be unnecessary:

• Policija je pronašla oružje. = perfectly natural

Croatian often leaves pronouns out because the verb form already gives information about person and number, and the noun here clearly identifies the subject.

Croatian has a strong tendency for short unstressed words, called clitics, to appear near the second position in the sentence.

In this sentence:

• Policija = first element
• je = clitic in second position
• pronašla oružje = rest of the sentence

So Policija je pronašla oružje follows a very normal Croatian pattern.

This is one reason why something like:

• Policija pronašla je oružje

sounds unnatural in standard Croatian.

The dictionary form is pronaći.

When you look up verbs in Croatian dictionaries, they are usually listed in the infinitive:

• pronaći = to find

From that verb you get forms like:

• pronašao = he found
• pronašla = she found / feminine singular found
• pronašli = they found / masculine plural found

So if you want to memorize this sentence, it helps to connect:

• pronašla → pronaći