This is the 5370th most frequent Polish word.
sprawców
"Perpetrators."
Here, 'sprawców' refers to the individuals who committed the act (perpetrators) and is used as the object of the action of investigating.
Policja bada tropy sprawców napadu na bank.
The police are investigating the tracks of the perpetrators of the bank robbery.
In this example, 'sprawców' is used to denote the group of individuals responsible for an offense, serving as the object.
Sprawców nie udało się jeszcze zatrzymać.
The perpetrators have not yet been apprehended.
The word 'sprawców' here indicates the people who carried out the act of vandalism, used as the direct object in the sentence.