This is the 864th most frequent Lithuanian word.
nusikaltimų
"Crimes."
The word 'nusikaltimų' here is in the genitive plural, indicating possession or origin ('a series of crimes').
Policija ištyrė nusikaltimų seriją.
The police investigated a series of crimes.
It’s again genitive plural, used here to quantify or speak about the extent or subject of increase ('the increase in crimes').
Nusikaltimų padaugėjo mieste per pastaruosius metus.
Crimes have increased in the city over the past year.
Here, it is linked to the concept of 'crime prevention' in a prepositional phrase, showing the context in which crimes are being discussed.