Aamirso, Yes collective nouns are treated as singular, however in case of "Police", it is treated as Plural, this is what I have found after a lot of research everywhere on internet.
Also check the response of
udit816, he has very well explained it.
Aamirso
Nighat Bano
Which of the following sentences is correct:
1. Police was informed
2. Police were informed
Collective nouns are always singular.
So police, a collective noun, is very much singular.